What follows are the subclasses from one class of the Manual of Classification for US patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retrieve patent titles by entering the class/subclass in the box below.
Enter a class/subclass code here to get a list of patent titles. Use
any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any
subclass letters capitalized. Currently Design Patent titles (those in the
classes of the form Dxx.yy) are not retreivable.
Class Number: 968
Class Title: HOROLOGY
Subclases: 381-977
Subclass Subclass
Number Title
* ******************************
* CROSS-REFERENCE ART COLLECTIONS
* *****************************
381 TIMEPIECES OF WHICH THE INDICATING MEANS OR CASE PROVOKE SPECIAL
EFFECTS, E.G., AESTHETIC EFFECTS, ETC. (ornamental shaping of
dials subclass 153 special effects and pictures in general B44F)
[G04B 45/00]
382 .Light-, colour-, line-, or spot-effects caused by parts or
pictures moved by the clockwork (disc-shaped indicating parts
subclasses 145 and 163; figures or parts thereof for indicating
the time, moved by the clockwork subclass 247) [G04B 45/00B]
383 .Light-, colour-, line- or spot-effects caused by or on
stationary parts (change of appearance by exchangeable case
parts subclass 409) [G04B 45/00C]
384 .Inscriptions or pictures moved by the clockwork, e.g., for
advertising, etc. (clocks with abrupt time indication subclass
85; disc-shaped indicating elements subclasses 145 and 163;
advertising in general G09F) [G04B 45/00D]
385 .Inscriptions and pictures moved by hand (clockworks with abrupt
time indication subclass 85; adjustable hands or mechanisms
subclass 211; combination of clockwork with counter, e.g., for
sports results, etc., subclass 381; movable ornaments and
decorations subclass 408) [G04B 45/00F]
386 .Figures or parts thereof moved by the clockwork (disc-shaped
indicating by moving figures subclass 247; normal moving parts
of the clockwork visible through a window, e.g., the
escapement, etc., subclass 394) [G04B 45/00H]
387 ..With oscillating motion, in pocket- or wrist watches [G04B
45/00H2]
388 ..With oscillating motion in hanging or standing clockworks such
as imitation of a real pendulum [G04B 45/00H3]
389 ..Moving parts of the clockwork e.g., pendulum, hands in special
form, mostly constructed as a figure (cases and nonmoving
parts of the clockwork in various forms subclass 390;
decoration and manufacturing methods therefor, also for moving
parts subclass 391; construction of normal pendulums subclass
105; construction of normal hands subclass 143) [G04B
45/00H4]
390 .Cases and movable parts with a special shape (movable parts
with a special shape subclass 389; decoration in general, and
methods of manufacture thereof subclass 391; cases in general
subclass 294; combination with genuine utensils or mounting
therein subclass 398) [G04B 45/00K]
391 .Decoration of the case and of parts thereof, e.g., as a method
of manufacture thereof, etc. (specially shaped subclasses 389
and 390; decoration with inscriptions and pictures subclass
392; construction of the hands subclass 143; decoration by
adding extra pieces to the clockwork subclass 406; coloring by
treatment of the surface, e.g., by oxidation C25D) [G04B
45/00M]
392 .Pictures or inscriptions on the case or parts thereof,
attaching complete pictures (decoration and manufacture thereof
subclass 391; special decorative parts which are attached to
the case or other parts subclass 406) [G04B 45/00P]
393 ..Changeable parts (cases or clockworks with holders or as
holders subclass 345) [G04B 45/00P2]
394 .Timepieces of which the clockwork is visible partly or wholly
(figures or parts thereof moved by the clockwork subclass 391)
[G04B 45/02]
395 .Timepieces with invisible drive, e.g., with hands attached to a
rotating glass disc, etc. (for advertising G09F 23/00;
disc-shaped hands with marks or notches subclass 145) [G04B
45/04]
396 ..Whereby the clockwork is positioned in the hands or pendulum
(gearwork subclass 2; pendulums subclass 105; construction of
the hands subclass 143) [G04B 45/04B]
397 ..Whereby the driving mechanism of the hand is invisible because
of special shielding (construction of the hands subclass 143)
[G04B 45/04C]
398 TIMEPIECES COMBINED WITH OTHER ARTICLES WHICH DO NOT INTERFERE
WITH THE RUNNING OR THE TIMEKEEPING OF THE TIMEPIECE (with
magnifying glass built into the face subclass 368; clockwork
cases for special purposes subclass 342; inscriptions or
pictures moved by hand subclass 385; specially shaped cases,
also imitation utensils subclass 390) [G04B 47/00]
399 .Mounting or fixing to the steering wheel of a vehicle [G04B
47/00B]
400 .Mounting in and combined with adjustable indicating means,
e.g., date indicating means adjustable by hand, marks or
counters, etc. (calendar clocks subclass 170) [G04B 47/00C]
401 .Combined with a key [G04B 47/00E]
402 .Combined with a lighter [G04B 47/00G]
403 .Combined with a pen [G04B 47/00I]
404 .Installations within mirrors, pictures, furniture or other
household articles (see note attached to this subclass)
405 ..In musical instruments or loudspeakers (sounding bodies with
chimes subclass 225; in alarm clocks subclass 237; cases with
arrangements for enhancing the sound production subclass 303)
[G04B 47/02C]
406 .With attached ornaments or amusement apparatus (decorated cases
see subclass 381) [G04B 47/04B]
407 ..Fastening of jewels and the like (set on or into numbers
subclass 272; jewel bearings subclass 153; setting of jewels
and tools therefor A44C; devices for setting jewel bearings
subclass 735) [G04B 47/04B]
408 ..Movable decorations and parts thereof (inscriptions and
pictures moved by hand subclass 385) [G04B 47/04C]
409 .Changeable decorations and parts thereof, decorations for the
case which change the external appearance of the clockwork (see
note attached to this subclass)
410 ..Clockwork combined with toys (devices for teaching clock
reading G09B 19/12; indicating play time G07C 1/28) [G04B
47/04K]
411 .With attached measuring instruments, e.g., pedometer,
barometer, thermometer, or compass, etc. (in combination with a
tachometer which winds up the clockwork subclass 64) [G04B
47/06]
412 ..With measuring instruments or calculating scales for
indicating relationship between quantity and time (meters for
measuring average speed, measuring speed by chronograph G01P;
slide rules, and calculating wheels G06G; indicating or
recording of quantity-time ratios G01D) [G04B 47/06B]
413 ..With a compass (compasses G01C 17/00) [G04B 47/06K]
414 TIMEPIECES USING THE POSITION OF THE SUN, MOON, OR STARS
(devices for fixing the place and time by astronomical
observations G01C 21/00) [G04B 49/00]
415 .Sundials (normal dials subclass 147) [G04B 49/02]
416 ..Graduation or shaping of dials [G04B 49/04]
426 WINDING MECHANICAL CLOCKS ELECTRICALLY (winding mechanically
subclass 23; electrical winding of spring-driven arrangements
for gramophones G11B 19/20) [G04C 1/00]
427 .By electrothermal or electro-pneumatic arrangements [G04C
1/00B]
428 .For clock systems (subclasses 429-434 take precedence) [G04C
1/00F]
429 .By electromagnets [G04C 1/02]
430 ..With snap-acting armature [G04C 1/02B]
431 ...Winding up springs [G04C 1/02B2]
432 ..Having unipolar rotating armature (two-pole or multipole
arrangements subclasses 434, 435, and 439) [G04C 1/02C]
433 ..With linearly moving armature [G04C 1/02D]
434 .By electric motors with rotating or with reciprocating movement
[G04C 1/04]
435 ..Winding up springs [G04C 1/06]
436 ...By oscillating movement [G04C 1/06B]
437 ...By continuous rotating movement [G04C 1/06C]
438 ...By stepping rotating movement [G04C 1/06D]
439 ..Raising weights [G04C 1/08]
440 ...By oscillating movement [G04C 1/08B]
441 ...By continuously rotating movement [G04C 1/08C]
442 ...By stepping rotating movement [G04C 1/08D]
443 .Protection against overwinding (in mechanical clocks or watches
subclasses 16, 36, 38, 66, and 71) [G04C 1/10]
444 ..Of the spring [G04C 1/12]
445 ..Of the weights [G04C 1/14]
446 ELECTROMECHANICAL CLOCKS OR WATCHES INDEPENDENT OF OTHER
TIMEPIECES AND IN WHICH THE MOVEMENT IS MAINTAINED BY ELECTRIC
MEANS (synchronization subclass 506) [G04C 3/00]
447 .Electromechanical switches for setting or display [G04C 3/00K]
448 ..Position, e.g., inclination dependent switches, etc. [G04C
3/00K2]
449 ..Magnetically controlled [G04C 3/00K3]
450 ..Multiple switches (subclass 449 takes precedence) [G04C
3/00K4]
451 ..Electromechanical contact-making and breaking devices acting
as pulse generators for setting [G04C 3/00K5]
452 .Mounting, assembling of components [G04C 3/00M]
453 .Wherein movement is regulated by a pendulum [G04C 3/02]
454 ..Using mechanical coupling (using more than one pendulum
subclass 457; using torsion pendulums subclass 464; using
conical pendulums subclass 465) [G04C 3/02B]
455 ...With constant impulses [G04C 3/02B2]
456 ..Using other coupling means, e.g., electrostrictive,
magnetostrictive, etc.) [G04C 3/02D]
457 ..Using more than one pendulum (synchronization between master
and slave pendulums subclass 532) [G04C 3/02K]
458 ..Using electromagnetic coupling between electric power source
and pendulum (subclass 464 takes precedence) [G04C 3/027]
459 ...The pendulum controlling contacts and mechanically driving
the gear-train (constructional details of contact devices
subclasses 545 and 608) [G04C 3/027B]
460 ...The pendulum controlling contacts, thereby
electromagnetically driving the gear-train or several
gear-trains (generating driving pulses in master-clocks
subclass 541) [G04C 3/027C]
461 ...The pendulum controlling contacts, the pendulum driving
electromagnet simultaneously driving the gear-train [G04C
3/027D]
462 ...The pendulum controlling indirectly, i.e., without mechanical
connection, contacts, e.g., by magnetic or optic means, etc.
[G04C 3/027E]
463 ...The pendulum controlling the gear-train by means of static
switches, e.g., transistor circuits, etc. [G04C 3/027F]
464 ..Using torsion pendulums; using conical pendulums (construction
thereof subclass 103) [G04C 3/033]
465 ...Using conical pendulums (construction thereof subclass 134)
[G04C 3/033B]
466 .Wherein movement is regulated by a balance (construction
thereof subclass 110) [G04C 3/04]
467 ..Using mechanical coupling [G04C 3/04B]
468 ...With constant impulses [G04C 3/04B2]
469 ...Using other coupling means, e.g., electrostrictive,
magnetostrictive, etc. [G04C 3/04D]
470 ..Using electromagnetic coupling between electric power source
and balance [G04C 3/06]
471 ...The balance controlling contacts and mechanically driving the
gear-train [G04C 3/06B]
472 ...The balance controlling contacts, the gear-train or several
gear-trains being driven electromagnetically thereby [G04C
3/06C]
473 ...The balance controlling contacts, the balance driving
electromagnet simultaneously driving the gear-train [G04C
3/06D]
474 ...The balance controlling indirectly, i.e., without mechanical
connection, contacts, e.g., by magnetic or optic means, etc.
[G04C 3/06E]
475 ...The balance controlling gear-train by means of static
switches, e.g., transistor circuits, etc. (synchronization of
balance subclass 520) [G04C 3/06F]
476 ....Constructional details, e.g., disposition of coils, etc.
[G04C 3/06F2]
477 ....Driving circuits with distinct detecting and driving coils
[G04C 3/06F3]
478 .....Provided with automatic control [G04C 3/06F3B]
479 ....Driving circuits using a single coil for detection and
driving purposes [G04C 3/06F4]
480 .Wherein movement is regulated by a mechanical oscillator other
than a pendulum or balance, e.g., by a tuning fork, e.g.,
electrostatically, etc. [G04C 3/08]
481 ..Driven by electromagnetic means [G04C 3/10]
482 ...Constructional details [G04C 3/10B]
483 ....Of the mechanical oscillator or of the coil [G04C 3/10B2]
484 ....Of the pawl or the ratched-wheel [G04C 3/10B3]
485 .....Pawl and ratched-wheel being magnetically coupled [G04C
3/10B3B]
486 ....Controlling frequency or amplitude of the oscillating system
(circuits subclass 487) [G04C 3/10B4]
487 ...Driving circuits [G04C 3/10C]
488 ..Driven by piezoelectric means; driven by magnetostrictive
means [G04C 3/12]
489 ...Driven by magnetostrictive means [G04C 3/12B]
490 .Incorporating a stepping motor (subclasses 302 to 488 take
precedence) generating timing pulses subclasses 817 and 901;
setting subclass 906; synchronization subclass 920; generating
commutating pulses in masterclocks subclasses 525 and 541;
slave clocks actuated intermittently by electromechanical
step-advancing mechanisms subclass 548; control circuits for
stepping motors in general H02P 8/00) [G04C 3/14]
491 ..Means to reduce power consumption by reducing pulse width or
amplitude and related problems, e.g., detection of unwanted or
missing step, etc. [G04C 3/14B]
492 ..Incorporating two or more stepping motors or rotors [G04C
3/14C]
493 .Incorporating an electrodynamic continuously rotating motor
(subclasses 453 and 488 take precedence; clocks driven by
synchronous motors subclass 553) (apparatus which can be set
and started to measure off predetermined or adjustable fixed
time intervals with electric driving means, e.g., incorporating
clocks, etc., subclasses 815 and 816; electromechanical
stopwatches subclass 837) [G04C 3/16]
494 ..Comprising a mechanical regulating device influencing the
electromotor (constructional details of the mechanical
regulating device subclass 103) [G04C 3/16B]
495 .Incorporating electrothermal or electro-pneumatic driving means
[G04C 3/18]
496 ELECTRIC OR MAGNETIC MEANS FOR CONVERTING OSCILLATORY TO ROTARY
MOTION IN TIMEPIECES, I.E., ELECTRIC OR MAGNETIC ESCAPEMENTS
(regulators subclass 446) [G04C 5/00]
497 .Magnetic or electromagnetic means [G04C 5/00B]
498 ELECTRICALLY ACTUATED DEVICES FOR SETTING THE TIME-INDICATING
MEANS (of slave clocks subclass 533; of synchronous clocks
subclass 561; mechanical setting devices subclass 248;
electronic setting devices subclass 906) [G04C 9/00]
499 .Brought into action by radio transmission [G04C 9/02]
500 .By blocking the driving means [G04C 9/04]
501 .By decoupling the driving means (combined with blocking means
subclass 500) [G04C 9/06]
502 .By electric drive, i.e., for mechanical clocks [G04C 9/08]
503 ARRANGEMENTS OF ELECTRIC POWER SUPPLIES IN TIMEPIECES (circuits
subclass 888; mounting, assembling of components of
electromechanical watches subclass 452, of electronic watches
subclass 877) [G04C 10/00]
504 .The power supply being a radioactive or photovoltaic source
[G04C 10/02]
505 .With means for indicating the condition of the power supply (in
general G01R 31/00B) [G04C 10/04]
506 SYNCHRONIZATION OF INDEPENDENTLY DRIVEN CLOCKS (synchronization
between master and slave pendulums subclass 532; synchronization
of electronic oscillators in general H03L 7/00) [G04C 11/00]
507 .By changing the driving speed [G04C 11/00B]
508 .By changing the ratio of the driving gear [G04C 11/00C]
509 .By positioning of the index or by regulating the length of the
pendulum in dependence on the time difference with a standard
[G04C 11/00H]
510 .By radio (time setting brought into action by radio subclass
499) [G04C 11/02]
511 ..Provided with arrangements to prevent synchronization by
interfering signals [G04C 11/02B]
512 ..The timepiece preparing itself on set times on the reception
of the synchronizing signal [G04C 11/02C]
513 .Over a line (transmitting time signals over telephone networks
H04M 11/06; time setting subclass 498) [G04C 11/04]
514 ..Provided with arrangements to prevent synchronization by
interfering signals [G04C 11/04B]
515 ..The timepiece preparing itself on set time on the reception of
the synchronizing signal [G04C 11/04C]
516 .With direct mechanical action on the time-indicating means
(time setting subclass 498) [G04C 11/06]
517 .Using an electro-magnet or -motor for oscillation correction
[G04C 11/08]
518 ..Using an electromagnet [G04C 11/08K]
519 ...Acting on the pendulum (mutual synchronization of pendulums
subclass 532) [G04C 11/08K5]
520 ...Acting on the balance [G04C 11/08K6]
521 ..Using an electromotor [G04C 11/08M]
522 ...Acting on the pendulum (mutual synchronization of pendulums
subclass 532) [G04C 11/08M5]
523 ...Acting on the balance [G04C 11/08M6]
524 DRIVING MECHANISMS FOR CLOCKS BY MASTER CLOCKS [G04C 13/00]
525 .Circuit arrangements; electric clock installations [G04C
13/02]
526 ..Master-slave systems using transmission of singular pulses for
driving directly slave clocks step-by-step (subclass 533 takes
precedence) [G04C 13/02B]
527 ...Via existing power distribution lines [G04C 13/02B2]
528 ...Via existing transmission lines (transmitting time signals
over telephone networks H04M 11/06) [G04C 13/02B3]
529 ...Via special lines [G04C 13/02B4]
530 ...By radio [G04C 13/02B5]
531 ..Master-slave systems using transmission of other driving
signals, e.g., coded signals, etc. [G04C 13/02F]
532 ..Transmission systems for synchronization of pendulum of slave
clocks by pendulums of master clocks [G04C 13/02K]
533 ..Pulse transmission systems with additional means for setting
the time indication of slave clocks (subclass 532 takes
precedence) [G04C 13/03]
534 ..Master clocks [G04C 13/04]
535 ...Monitoring or controlling master clock or system with more
than one master clock, e.g., for switching over to standby
motor or power system, etc. [G04C 13/04B]
536 ....By using devices similar to slave clocks [G04C 13/04B2]
537 ....Systems in which slave clocks function as master clocks for
other slave clocks (synchronization of independently driven
clocks subclass 506; setting subclass 498) [G04C 13/04B3]
538 ...Provided with supplementary means for setting or changing the
time indication of the slave clocks [G04C 13/04C]
539 ....For automatically correcting or compensating for
disturbances [G04C 13/04C2]
540 ....For automatically setting of slave clocks after correction
or after setting of master clock [G04C 13/04C3]
541 ...Arrangements for generating normal driving pulses (generating
timing pulses in general subclass 817) [G04C 13/04D]
542 ....By starting an independent mechanical driving device, e.g.,
motor controlling the contacts, etc. [G04C 13/04D2]
543 ....By switching on an electromagnetic driving device, e.g.,
electromotor, controlling the contacts, etc. [G04C 13/04D3]
544 ....By using current generating driving device [G04C 13/04D4]
545 ...Contact devices (for simultaneously winding several clocks
subclass 426) [G04C 13/06]
546 ....Controlled by a pendulum or a balance [G04C 13/06B]
547 .Slave clocks actuated intermittently [G04C 13/08]
548 ..By electromechanical step-advancing mechanisms (independent
clocks or watches incorporating a stepping motor subclass 490;
stepping motors in general H02K 33/00) [G04C 13/10]
549 ...Setting the time-indicating means (master-slave systems with
setting means subclass 533; adjusting independently driven
clocks subclasses 498 and 506) [G04C 13/10C]
550 ...With rotating armature [G04C 13/11]
551 ..By continuously rotating electric motors (independent clocks
subclass 493; clocks driven by synchronous motors subclass
553) [G04C 13/12]
552 ..By electrically released mechanical driving mechanisms [G04C
13/14]
553 CLOCKS DRIVEN BY SYNCHRONOUS MOTORS [G04C 15/00]
554 .Without power reserve [G04C 15/00B]
555 ..Provided with hand-actuated starting device [G04C 15/00B2]
556 ..Provided with automatic starting device [G04C 15/00B3]
557 ..Provided with means for indicating disturbance [G04C 15/00B4]
558 ..Provided with means for checking sense of rotation [G04C
15/00B5]
559 .With power reserve [G04C 15/00C]
560 .Synchronous clock systems, e.g., provided with radiolink or
using transmission of alternating current via existing power
distribution lines, etc. [G04C 15/00H]
561 ..Setting the time-indicating means, e.g., by controlling the
frequency or by changing the drive of the separate clocks by
using an auxiliary motor, etc. [G04C 15/00H2]
562 ..Automatic stabilization of net frequency with regard to time,
e.g., by comparing one of the clocks with an independent
clock, means being provided for automatic compensation of
disturbances, etc. [G04C 15/00H3]
563 .Lubricating [G04C 15/00T]
564 INDICATING THE TIME OPTICALLY BY ELECTRIC MEANS (subclass 577
takes precedence; by mechanical means subclasses 139 and 162)
[G04C 17/00] precedence; by mechanical means subclasses 139 and
162) [G04C 17/00]
565 .By hands [G04C 17/00B]
566 ..With date indication [G04C 17/00B2]
567 .By flaps [G04C 17/00F]
568 ..With date indication [G04C 17/00F2]
569 ..By a combination of different types of indicating devices,
e.g., flaps and drums, etc. [G04C 17/00K]
570 .By discs (by drums subclass 573) [G04C 17/00S]
571 ..With date indication [G04C 17/00S2]
572 ...Electromagnetically driven, e.g., intermittently, etc.
(clocks incorporating stepping motor subclass 490) [G04C
17/00S2B]
573 .By drums or drumlike devices [G04C 17/00T]
574 ..With date indication [G04C 17/00T2]
575 .Combined electro-optical and electromechanical displays [G04C
17/00V]
576 .By electric lamps [G04C 17/02]
577 PRODUCING OPTICAL TIME SIGNALS AT PREFIXED TIMES BY ELECTRIC
MEANS [G04C 19/00]
578 .By electric lamps [G04C 19/02]
579 .By indicating members moved electrically, e.g., flap, band,
etc. [G04C 19/04]
580 PRODUCING ACOUSTIC TIME SIGNALS BY ELECTRICAL MEANS (for
mechanical clocks or watches subclasses 225 and 243) [G04C
21/00]
581 .Constructional details (subclasses 582 and 588 take precedence)
(sound- producing devices in general G10K, e.g., 1/00) [G04C
21/02]
582 .Indicating the time of the day (acoustic indication of time
subclass 217) [G04C 21/04]
583 ..By striking mechanism [G04C 21/06]
584 ...With snail [G04C 21/08]
585 ...With locking plate [G04C 21/10]
586 ..By electro-acoustic time means [G04C 21/12]
587 ...Electro-acoustic time announcement, i.e., spoken [G04C
21/14]
588 .Producing the signals at adjustable fixed times [G04C 21/16]
589 ..By mechanically unlocking an electromechanical vibrator, e.g.,
actuated by the leakage flux of the electric driving means,
etc. [G04C 21/18]
590 ...Provided with means for sheeting off or temporarily stopping
the signal [G04C 21/20F]
591 ..By closing a contact to ring an electromechanical alarm [G04C
21/20]
592 ...By the hand(s) or handlike members closing the contact [G04C
21/20B]
593 ...Put into action by the arbor of a mechanical alarm work [G04C
21/22]
594 ...Put into action by the spring of a mechanical alarm work
[G04C 21/24]
595 ...Put into action by the vibrations caused by the operation of
a mechanical alarm work [G04C 21/26]
596 ..By closing a contact to put into action electro-acoustic
means, e.g., awakening by music, etc. [G04C 21/28]
597 ..With provision for a number of operations at different times,
e.g., ringing the bells in a school, etc. [G04C 21/30]
598 ...By the hand(s) or handlike members closing the contacts [G04C
21/30B]
599 ...Giving indications at a number of places each at a different
time, e.g., system of alarms in a hotel, etc. [G04C 21/32]
600 ....By the hand(s) or handlike members closing the contacts
[G04C 21/32B]
601 ...Adjustable from the different places themselves [G04C
21/32K]
602 ..Devices on watches or similar portable timepieces [G04C
21/34]
603 ..Signal-repeating devices [G04C 21/36]
604 ..Adjusting the duration of signals [G04C 21/38]
605 CLOCKS WITH ATTACHED OR BUILT-IN MEANS OPERATING ANY DEVICE AT
PRESELECTED TIMES OR AFTER PRESELECTED TIME INTERVALS (if
restricted to producing acoustic time signals by electrical
means subclass 580; mechanical alarm clocks subclass 231;
apparatus which can be set and started to measure off
predetermined intervals subclass 815; time or time-program
switches which automatically terminate their operation after the
program is completed H01H 43/00) [G04C 23/00]
606 .Constructional details [G04C 23/02]
607 ..Housings, supports, shielding, or similar stationary parts
[G04C 23/04]
608 ..Driving or regulating means [G04C 23/06]
609 ..Programming means [G04C 23/08]
610 ..For actuating any element which operates, or initiates the
operation of, the device concerned [G04C 23/10]
611 ..Electric circuitry [G04C 23/12]
612 .Mechanisms continuously running to relate the operation(s) to
the time of day [G04C 23/14]
613 ..Acting only at one preselected time or during one adjustable
time- interval [G04C 23/16]
614 ..For operating one device at a number of different times [G04C
23/18]
615 ...With contacts operated, or formed by clock hands or elements
of similar form [G04C 23/20]
616 ...With the actuating element carried by a disc [G04C 23/22]
617 ....The actuating element controlling another element
mechanically [G04C 23/24]
618 ..For operating a number of devices at different times [G04C
23/26]
619 ...With contacts operated, or formed, by clock hands or elements
of similar form [G04C 23/28]
620 ...With the actuating element carried by a disc [G04C 23/30]
621 ....The actuating element controlling another element
mechanically [G04C 23/32]
622 ..With provision for automatic modification of the program,
e.g., on Sunday, etc. [G04C 23/34]
623 ...Some operations being performed at another time [G04C
23/34G]
624 ...Another program being carried out [G04C 23/34H]
625 ...Some operations being overridden [G04C 23/34M]
626 ...By external influences [G04C 23/36]
627 .Mechanisms measuring a chosen time interval independently of
the time of day at which interval starts [G04C 23/38]
628 ..Using continuously running mechanism [G04C 23/40]
629 ..Acting only at the end of a single time interval [G04C 23/42]
630 ...With provision for selection from a number of preset
intervals [G04C 23/44]
631 ...With provision for adjustment of the interval (subclass 630
takes precedence) [G04C 23/46]
632 ..Acting at the end of successive time intervals [G04C 23/48]
633 ..With provision for modification of the interval(s) by external
influences [G04C 23/50]
651 GRIPPING, HOLDING OR SUPPORTING DEVICES (stands in general F16M;
for instruments G01D 11/30, B01L) [G04D 1/00]
652 .For assembly entirely by hand [G04D 1/00B]
653 ..Workbenches, supports; workbenches provided with suction
devices; for dust; illumination [G04D 1/00B2]
654 ..Supporting means facilitating assembly and mechanization,
e.g., magazines for components, etc. (machines for assembly
subclass 661; supports in general subclass 680) [G04B 1/00B3]
655 ..Screwdrivers (screwdrivers in general B65B) [G04D 1/00B5]
656 ...With power source for driving the screwdriver [G04D 1/00B5B]
657 ..Tools for setting, riveting or pressing, e.g., nippers for
this purpose, etc. (machines therefor subclass 736, 737, and
738) [G04D 1/00B6]
658 .For nonautomatic assembly, with automatic transport between
workbenches [G04D 1/00C]
659 ..Conveyor belts or chains (in general B65C) [G04D 1/00C2]
660 ..Turntables or plates, e.g., carousels, etc. (in general B65G
47/00) [G04D 1/00C3]
661 .For totally automated assembly [G04D 1/00D]
662 .Automated gripping means (hand-operated gripping means subclass
665) [G04D 1/00G]
663 ..With pneumatic holding means (hand tools with pneumatic means
subclass 665) [G04D 1/00G2]
664 .Devices for positioning and sorting of the components (sorting
and positioning in general B23Q) [G04D 1/00H]
665 .Tweezers; vice clamps or other special hand tools for
watchmakers (subclasses 673, 683, and 684 take precedence;
vices B25B; devices for setting bearing jewels and parts
thereof subclass 735; devices for setting watch glasses
subclass 739) [G04D 1/02]
666 ..Tweezers (tweezers for medical purposes A61B; setting tools
B41B 1/00) [G04D 1/02B]
667 ..Universal nippers (nippers for setting watch glasses digest
742) [G04D 1/02C]
668 ..Revolving-head nippers (jaw plates for latches subclass 726)
[G04D 1/02D]
669 ..Hand screws [G04D 1/02F]
670 ..Clamps for holding bearing jewels (machines for setting
bearing jewels subclass 685) [G04D 1/02G]
671 ..Hand tools for gripping or holding by magnetic means [G04D
1/02H]
672 ..Hand tools for gripping or holding by pneumatic means [G04D
1/02K]
673 .Tools for setting springs [G04D 1/04]
674 ..For springs of driving mechanisms (machines therefor subclass
710) [G04D 1/04B]
675 ..For coil springs in regulating mechanisms (machines therefor
subclass 701) [G04D 1/04C]
676 ...For working the ends (machines therefor subclass 701) [G04D
1/04C2]
677 ...For fastening the ends (machines therefor subclass 701) [G04D
1/04C3]
678 ....On the coil roll [G04D 1/04C3B]
679 ....On the coil bobbin [G04D 1/04C3C]
680 .Supporting devices for clockworks or parts of timepieces (for
automatic assembly subclass 654) [G04D 1/06]
681 ..Provided with a pickup means, e.g., microphone, etc.
(measuring and control means for comparison with a standard
frequency subclass 769) [G04D 1/06B]
682 ..Packaging and boxes for transport (packaging for small items,
packaging for special items B65D) [G04D 1/06G]
683 .Tools for setting or removing hands [G04D 1/08]
684 .Devices for opening or closing watch bottoms or covers
(machines therefor subclass 685) [G04D 1/10]
685 WATCHMAKER'S OR WATCH-REPAIRER'S MACHINES OR TOOLS FOR WORKING
MATERIALS (metal working in general Class B23) [G04D 3/00]
686 .For mechanical working other than with a lathe (lathes for
watchmakers subclass 724) [G04D 3/00B]
687 ..For parts of driving means [G04D 3/00B2]
688 ...For springs (springs in general B21F; mainspring construction
subclass 10; springs for the regulating mechanism subclass
701) [G04B 3/00B2B]
689 ...For spring barrels (construction of spring barrels subclasses
12 and 14) [G04D 3/00B2C]
690 ..For parts of the winding-up mechanism, e.g., for winding
axles, crowns, etc. (construction thereof subclasses 23 and
40) [G04D 3/00B4]
691 ..For components of the pawl construction, stop clicks, clutches
(construction thereof subclass 73) [G04D 3/00B6]
692 ..For components of gearworks (construction thereof subclass 85)
[G04D 3/00B8B]
693 ...For gear wheels or gears [G04D 3/00B8B]
694 ...For axles or sleeves [G04D 3/00B8C]
695 ...For axle taps, e.g., for grinding or polishing thereof, etc.
(on a lathe subclass 724) [G04D 3/00B8D]
696 ..For components of the escape mechanism (construction thereof
subclass 95) [G04D 3/00B10]
697 ...For levers [G04D 3/00B10B]
698 ...For lever wheels [G04D 3/00B10C]
699 ..For components of the regulating mechanism [G04D 3/00B12]
700 ...For balances (construction therefor subclass 110) [G04D
3/00B12B]
701 ...For coil-springs (coil-springs in general B12F; springs for
the driving mechanism subclass 710) [G04D 3/00B12C]
702 ..For components of the time-indicating mechanisms (construction
thereof subclass 139) [G04D 3/00B14]
703 ...For hands (construction thereof subclass 139) [G04D
3/00B14B]
704 ...For dials (construction thereof subclasses 139 and 153) [G04D
3/00B14C]
705 ...For time markers [G04D 3/00B14D]
706 ..For framework components (construction thereof subclass 265)
[G04D 3/00B16]
707 ..For bearing components (construction thereof subclass 271)
[G04D 3/00B18]
708 ...For bearing jewels (machines for boring through stones B28D;
for diamonds B24B; diamond polishing B24B 9/16; manufacture
of drawing stones B23P 5/00; setting of industrial stones
B23P 15/24) [G04D 3/00B18B]
709 ..For components for protecting the mechanism against external
influences (construction thereof subclasses 294 and 377) [G04D
3/00B20]
710 ...For cases [G04D 3/00B20B]
711 ...For the fastening means of the case or bracelet (construction
thereof subclass 359) [G04D 3/00B20C]
712 .For working with nonmechanical means, e.g., chemical,
electrochemical, metallizing, vaporizing, etc; with electron
beams, laser beams [G04D 3/00C]
713 ..For bearing components [G04D 3/00C1]
714 .For treatment of the material, e.g., surface treatment, etc.
[G04D 3/00D]
715 ..For components of driving mechanisms, e.g., mainspring, etc.
[G04D 3/00D2]
716 ..For gearwork components [G04D 3/00D8]
717 ...For gear wheels or gears [G04D 3/00D8B]
718 ...For axles, sleeves [G04D 3/00D8C]
719 ..For components of the escapement mechanism, e.g., lever
escapement, escape wheel, etc. [G04D 3/00D10]
720 ..For components of the regulating mechanism, e.g., coil
springs, etc. [G04D 3/00D12]
721 ..For components of the time-indicating mechanism, e.g., dials,
etc. [G04D 3/00D14]
722 ..For bearing components [G04D 3/00D18]
723 ..For components of the means protecting the mechanism against
external influences, e.g., cases, etc. [G04D 3/00D20]
724 .Lathes, with one or more supports; burnishing machines, with
one or more supports (metal lathes B23B; automatic lathes B23B;
grinding and polishing in general class B24) [G04D 3/02]
725 ..Components [G04D 3/02B]
726 ...Jaw-plates, revolving-head nippers [G04D 3/02B2]
727 ..For the manufacture of special components for clockworks [G04D
3/02C]
728 ...For gearwork components [G04D 3/02C8]
729 ....For gear wheels or gears [G04D 3/02C8B]
730 ....For axles, sleeves [G04D 3/02C8C]
731 ....For axle taps [G04D 3/02C8D]
732 ...For components of the time-indicating mechanism, e.g., dials,
etc. [G04D 3/02C14]
733 ...For bearing components [G04D 3/02C18]
734 ...For components of the means protecting the mechanism from
external influences, e.g., cases, etc. [G04D 3/02C20]
735 .Devices for placing bearing jewels, bearing sleeves, or the
like in position (fixing jewels A44C 17/04; tools for
assembling and taking apart gear wheels and bearing components
B25B; machines for the manufacture of bearing jewels and
components digest 686) [G04D 3/04]
736 ..For bearing jewels (pressing nippers and handtools subclass
657) [G04D 3/04B]
737 ..For lever, impulse-pin (adjustment of the escapement subclass
760) [G04D 3/04C]
738 ..For the coil rolls or bobbins [G04D 3/04D]
739 .Devices for shaping or setting watch glasses (cutting watch
glasses C03B 33/04; grinding and working of spectacle lenses
and lenses B24B; working plastic materials in general B29B)
[G04D 3/06]
740 ..Shaping without chipping away, e.g., by hot pressing or by
punching out the whole piece from a plate, etc. [G04D 3/06B]
741 ..Shaping by removing material, e.g., cutting out from a plate,
milling the edges, etc. [G04D 3/06C]
742 ..Setting or taking apart, whereby a temporary deformation of
the glass may take place [G04D 3/06D]
743 .Machines or apparatus for cleaning [G04D 3/08]
744 ..Whereby the components to be cleaned are placed in a container
[G04D 3/08B]
745 ...Whereby the container rotates in a cleaning fluid [G04D
3/08B2]
746 OILING DEVICES; SPECIAL LUBRICANT CONTAINERS FOR WATCHMAKERS
(bearings constructed with regard to oiling of the clockwork
subclass 281; oilcans for lubricating in general F16N 3/04)
[G04D 5/00]
747 .Oilcans and other handtools for lubricating special parts of
the clockwork mechanism [G04D 5/00B]
748 MEASURING, COUNTING, CALIBRATING, TESTING, OR REGULATING
APPARATUS (measuring devices and calibers in general G01B;
counters in general H03K) [G04D 7/00]
749 .Purely mechanical measuring and testing apparatus [G04D 7/00B]
750 .Electrical measuring and testing apparatus [G04D 7/00C]
751 ..For electric or electronic clocks [G04D 7/00C2]
752 .Optical measuring and testing apparatus [G04D 7/00D]
753 .Counters for small components, e.g., bearing jewels, etc. [G04D
7/00G]
754 .Testing apparatus for complete clockworks with regard to
external influences or general good working [G04D 7/00K]
755 ..With regard to the sealing of the case [G04D 7/00K2]
756 ..With regard to the reaction to shocks [G04D 7/00K3]
757 ..With regard to the functioning of the automatic winding-up
device [G04D 7/00K4]
758 .For mainsprings [G04D 7/02]
759 .For gearwork, e.g., optical control of gear wheels, etc.
(optical control in general G01B, G01B 9/08) [G04D 7/04]
760 .For escapements [G04D 7/06]
761 .For balance wheels [G04D 7/08]
762 ..For adjusting the felloe or the shafts (adjustment of the gear
wheels subclass 759) [G04D 7/08B]
763 ..For balancing [G04D 7/08C]
764 ...By setting adjustable elements, e.g., balance wheel screws,
etc. [G04D 7/08C2]
765 ...By removing material from the balance wheel itself [G04D
7/08C3]
766 ....Automatic devices therefor (balancing and loading or
removing, carried out automatically) [G04D 7/08C3B]
767 ...By loading the balance wheel itself with material [G04D
7/08C4]
768 .For hairsprings of balances [G04D 7/10]
769 .Timing devices for clocks or watches for comparing the rate of
the oscillating member with a standard (supporting devices for
clocks with built-in recording apparatus subclass 681;
measuring short time intervals subclass 844; frequency
measuring in general H04B, G01R) [G04D 7/12]
770 ..Only for measuring [G04D 7/12B]
771 ...For complete clockworks [G04D 7/12B2]
772 ....With recording, e.g., vibrograph, etc. [G04D 7/12B2B]
773 .....Devices for facilitating the reading or the interpretation
of the recording [G04D 7/12B2B2]
774 ...For the control mechanism only found from outside the
clockwork [G04D 7/12B3]
775 ....For measuring amplitude [G04D 7/12B3B]
776 ....For measuring frequency [G04D 7/12B3C]
777 ..Wherein further adjustment devices are present [G04D 7/12C]
778 ...For complete clockworks [G04D 7/12C2]
779 ...For the control mechanism only from outside the clockwork
[G04D 7/12C3]
780 ....Whereby the adjustment device works on the compass [G04D
7/12C3B]
781 ....Whereby the adjustment device works on the mainspring [G04D
7/12C3C]
782 ....Whereby the adjustment device works on the balance wheel
[G04D 7/12C3D]
783 DEMAGNETIZING DEVICES (demagnetizing in general H01F 13/00)
[G04D 9/00]
801 APPARATUS WHICH CAN BE SET AND STARTED TO MEASURE OFF
PREDETERMINED OR ADJUSTABLY FIXED TIME INTERVALS WITHOUT DRIVING
MECHANISMS, E.G., EGG TIMER, ETC. (electric time and
time-program switches H01H 43/00) [G04F 1/00]
802 .Using electronic timing, e.g., counting means, etc. (pulse time
delay arrangements H03K 5/13; modifications of electronic
switches for introducing a time delay before switching H03K
17/28) [G04F 1/00B]
803 .By consuming prefixed quantities of materials, e.g., by burning
candle, etc. [G04F 1/02]
804 .By movement or acceleration due to gravity [G04F 1/04]
805 ..By flowing away of a prefixed quantity of fine granular or
liquid materials, e.g., sand-glass, water-clock, etc. [G04F
1/06]
806 ...Using acoustic signalling [G04F 1/06B]
807 ...Using electrical contact device [G04F 1/06C]
808 ..By a body falling a prefixed distance in air or in a viscous
material [G04F 1/08]
809 APPARATUS WHICH CAN BE SET AND STARTED TO MEASURE OFF
PREDETERMINED OR ADJUSTABLY FIXED TIME INTERVALS WITH DRIVING
MECHANISMS, E.G., DOSIMETER WITH CLOCKWORK, ETC. (electric time
or time-program switches H01H 43/00) [G04F 3/00]
810 .With mechanical driving mechanisms [G04F 3/02]
811 ..Using mechanical signaling device [G04F 3/02B]
812 ..Mechanically actuated (cigar or cigarette receptacles or boxes
with means for limiting the frequency of smoking A24F 15/00B)
[G04F 3/02C]
813 ..Using electrical contacts, e.g., for actuating
electro-acoustic device, etc. [G04F 3/02D]
814 ..Additional arrangements in connection with ordinary
nonelectric clocks for this purpose [G04F 3/04]
815 .With electric driving mechanisms [G04F 3/06]
816 ..Additional arrangements in connection with ordinary electric
clocks for this purpose [G04F 3/08]
817 APPARATUS FOR PRODUCING PRESELECTED TIME INTERVALS FOR USE AS
TIMING STANDARDS (generating clock signals for electric digital
computers G06F 1/04; regulating frequency in general H03C, L)
[G04F 5/00]
818 .Metronomes (periodic signalization by acoustic signals in
general subclass 218) [G04F 5/02]
819 ..Mechanic metronomes [G04F 5/02B]
820 ..Electronic metronomes (rhythm generation for electrophonic
musical instruments G10H 1/36) [G04F 5/02C]
821 ..Using electromechanical driving, e.g., of optical scanned
recordings, etc. (electrophonic musical instruments in which
tones are generated by electromechanical means, e.g., by using
pickup means for reading recorded waves, etc. G10H 3/00) [G04F
5/02D]
822 .Using oscillators with electromechanical resonators (producing
electric oscillations or timing pulses [G04F 5/04]
823 ..Using piezoelectric resonators [G04F 5/06]
824 ...Constructional details (details of resonators in general H03H
9/02) [G043F 5/06B]
825 ....Trimmer condensators (capacitors in general H01G) [G04F
5/06B2]
826 ..Using magnetostrictive resonators [G04F 5/08]
827 .Using electric or electronic resonators (subclass 829 takes
precedence) [G04F 5/10]
828 .Using fluidic devices [G04F 5/12]
829 .Using atomic clocks [G04F 5/14]
830 .Using pulses produced by radioisotopes [G04F 5/16]
831 APPARATUS FOR MEASURING UNKNOWN TIME INTERVALS BY MECHANICAL
MEANS [G04F 7/00]
832 .By measuring the distance of fall or the final velocity of a
falling body [G04F 7/02]
833 .Using a mechanical oscillator [G04F 7/04]
834 ..Running only during the time interval to be measured, e.g.,
stopwatch, etc. [G04F 7/06]
835 ..Watches or clocks with stop devices, e.g., chronograph, etc.
[G04F 7/08]
836 .Means used apart from the timepiece for starting or stopping
same [G04F 7/10]
837 APPARATUS FOR MEASURING UNKNOWN TIME INTERVALS BY
ELECTROMECHANICAL MEANS [G04F 8/00]
838 .Using continuously running driving means [G04F 8/00B]
839 .Running only during the time intervals to be measured, e.g.,
stopwatch, etc. [G04F 8/00C]
840 .Using an electromechanical oscillator (subclasses 817 and 844
take precedence) [G04F 8/02]
841 ..Using a piezoelectric oscillator [G04F 8/04]
842 ..Using a magnetostrictive oscillator [G04F 8/06]
843 .Means used apart from the timepiece for starting or stopping
same [G04F 8/08]
844 APPARATUS FOR MEASURING UNKNOWN TIME INTERVALS BY ELECTRIC MEANS
(timing devices for clocks or watches for comparing the rate of
the oscillating member with a standard subclass 769; radar
systems, analogous systems G01S 9/00; measuring frequency G01R
23/00; measuring phase angle G01R 25/00) [G04F 10/00]
845 .Using oscillators with passive electric resonator, e.g., lumped
LC, etc. (subclasses 846, 847, and 849 take precedence) [G04F
10/02]
846 .By counting pulses or half cycles of an alternating current
[G04F 10/04]
847 .By measuring phase [G04F 10/06]
848 .Using pulses produced by radioisotopes [G04F 10/08]
849 .By measuring electric or magnetic quantities changing in
proportion to time [G04F 10/10]
850 ..With conversion of the time intervals [G04F 10/10B]
851 APPARATUS FOR MEASURING UNKNOWN TIME INTERVALS BY MEANS NOT
PROVIDED FOR IN SUBCLASS 817 TO SUBCLASS 844 [G04F 13/00]
852 .Using optical means [G04F 13/02]
853 ..Using cathode-ray oscilloscopes (circuits for inserting
reference time markers for cathode-ray oscilloscopes G01R
13/30B) [G04F 13/02B]
854 ..Measuring duration of ultrashort light pulses, e.g., in the
picosecond range, etc; particular detecting devices therefor
(nonlinear optics G02F 1/35; monitoring arrangements for
lasers in general H01S 3/00D; photometry, radiation pyrometry
G01J 1/00, 5/00) [G04F 13/02C]
855 .Using electrochemical means [G04F 13/04]
856 .Using fluidic means [G04F 13/06]
876 SUBJECT MATTER NOT PROVIDED FOR IN SUBCLASSES 901 TO 975, E.G.,
INTEGRATED CIRCUITS FOR ELECTRONIC TIMEPIECES [G04G 1/00]
877 .Structural aspects; housings; aesthetical aspects [G04F 1/00B]
878 ..Assembly of components [G04G 1/00B2]
879 ...Mounting of electronic components [G04G 1/00B2B]
880 ....Mounting of the display [G04G 1/00B2B2]
881 ...Electric connectors, e.g., conductive elastomers, etc. [G04G
1/00B2C]
882 ..Housings [G04G 1/00B3]
883 ...Watches distributed over several housings [G04G 1/00B3B]
884 ...Desktop clocks [G04G 1/00B3C]
885 ..Timepieces combined with an external data detector [G04G
1/00B4]
886 ...For measuring physiological data [G04G 1/00B4B]
887 ..Timepieces combined with games [G04G 1/00B5]
888 .Electric power supply circuits (in general H02M 1/00) [G04G
1/00C]
889 ..Conversion or regulation of current or voltage [G04G 1/00C2]
890 ...Capacitive voltage division or multiplication [G04G 1/00C2B]
891 ...Regulation [G04G 1/00C2C]
892 ..Preventing voltage drop due to overloading the power supply
[G04G 1/00C4]
893 ..Backup power supply [G04G 1/00C5]
894 ..Reducing power consumption during the storage of the watch
[G04G 1/00C6]
895 .Input or output device integrated in a timepiece [G04G 1/00D]
896 ..Using radiowaves (setting by radio subclass 907;
synchronization by radio subclass 922; transmission of control
signal subclass 926) [G04G 1/00D2]
897 ..Using voice (producing acoustic time signals subclass 968)
[G04G 1/00D3]
898 .Pulse shaping; amplification [G04G 1/00E]
899 .Touch switches particularly adapted to timepieces (in general
H03K 17/96) [G04G 1/00K]
900 .Electronic timepieces using a microcomputer, e.g., for
multifunction clocks, etc. [G04G 1/00M]
901 PRODUCING TIMING PULSES (driving circuits for stepping motors
subclass 490; producing preselected time intervals for use as
timing standards subclass 817; pulse technique in general H03K;
control, synchronization, or stabilization of generators in
general H03L) [G04G 3/00]
902 .Circuits for deriving low frequency timing pulses from pulses
of higher frequency (pulse frequency dividers in general H03K
23/00 to 29/00) [G04F 3/02]
903 ..The desired number of pulses per unit of time being obtained
by adding to or substracting from a pulse train one or more
pulses (in general G06F 7/68) [G04G 3/02B]
904 ..By storing time and date which are periodically investigated
and modified accordingly, e.g., by using cyclic shift
registers, etc. [G04G 3/02D]
905 ..By combining pulse trains of different frequencies, e.g.,
obtained from two independent oscillators or from a common
oscillator by means of different frequency dividing ratios,
etc. (synchronization of electric timepieces subclasses 506
and 920) [G04G 3/02E]
906 SETTING, I.E., CORRECTING OR CHANGING THE TIME-INDICATION
(synchronization combined with automatic setting at regular
intervals, e.g., by coded signals, etc., subclass 920) [G04G
5/00]
907 .Brought into action by radio [G04G 5/00B]
908 .Debouncing circuits [G04G 5/00C]
909 .By using a separate register into which the entire correct
setting is introduced, which is thereafter transferred to the
time counters [G04G 5/00D]
910 .By temporarily changing the number of pulses per unit time,
e.g., quick-feed method, etc. [G04G 5/02]
911 ..Quick-feed method [G04G 5/02B]
912 ...The time counters first being reset to zero [G04G 5/02B2]
913 ..By adding or suppressing individual pulses, e.g., for
step-motor, etc. [G04G 5/02C]
914 .By setting each of the displayed values, e.g., date, hour, etc.
independently [G04G 5/04]
915 ..Correction of the minutes counter in function of the seconds
counter position at zero adjustment of the latter [G04G
5/04B]
916 ..Using a commutating device for selecting the value, e.g.,
hours, minutes, seconds, etc. to be corrected [G04G 5/04C]
917 ...Using a sequential electronic commutator [G04G 5/04C2]
918 ....By using a separate register into which the correct setting
of one of the counters is introduced which is thereafter
transferred to the selected time counter to be reset [G04G
5/04C2D]
919 ...By using a separate register into which the correct setting
of the selected time counter is introduced which is
thereafter transferred to the time counter to be reset [G04G
5/04C3]
920 SYNCHRONIZATION [G04G 7/00]
921 .Provided with arrangements to prevent synchronization by
interfering signals [G04G 7/00B]
922 .By radio [G04G 7/02]
923 ..Provided with arrangements to prevent synchronization by
interfering signals [G04G 7/02B]
924 ..The timepiece preparing itself on set times on the reception
of the synchronizing signal [G04G 7/02C]
925 VISUAL TIME- OR DATE-INDICATION MEANS [G04G 9/00]
926 .Transmission of control signals [G04G 9/00]
927 ..Using coded signals (synchronization combined with automatic
setting at regular intervals, e.g., by coded signals, etc.
subclass 920) [G04G 9/00B2]
928 .In which the light emitting display elements may be activated
at will or are controlled in accordance with the ambient light
[G04G 9/00C]
929 .By light valves in general (subclasses 950 and 962 take
precedence; electro-, magneto-, or acoustic-optic devices in
general G02F 1/00) [G04G 9/00D]
930 ..Details [G04G 9/00D1]
931 ...Constructional [G04G 9/00D1B]
932 ....Illumination devices [G04G 9/00D1B2]
933 ...Electrical, e.g., selection or application of the operating
voltage, etc. [G04G 9/00D1C]
934 ....Using means to adjust the display in accordance with the
ambient light, e.g., switching or controlling a
supplementary light source, etc. [G04G 9/00D1C2]
935 .Using a cathode-ray tube as display device (displaying
supplementary information, such as, time on TV screen H04N
5/445) [G04G 9/00E]
936 .In which functions not related to time can be displayed
(digital output to display devices of digital computers G06F
3/14) [G04G 9/00F]
937 ..Combined with a calculator or computing means [G04G 9/00F2]
938 .In which the time in another time zone or in another city can
be displayed at will [G04G 9/00G]
939 .By building up characters using a combination of indicating
elements and by selecting desired characters out of a number of
characters or by selecting indicating elements the positions of
which represent the time (this subclass is a combination of
subclasses 942 and 954) [G04G 9/00H]
940 ..By controlling light sources, e.g., electroluminescent diodes,
etc. [G04G 9/00H2]
941 ..Using light valves, e.g., liquid crystals, etc. [G04G 9/00H3]
942 .By selecting desired character out of a number of characters or
by selecting indicating elements the position of which
represent the time, e.g., by using multiplexing techniques,
etc. [G04G 9/02]
943 ..Using multiplexing techniques [G04G 9/02B]
944 ..Provided with date indication [G04G 9/02C]
945 ..Provided with means for displaying at will a time indication
or a date or a part thereof [G04G 9/02D]
946 ..By controlling light sources, e.g., electroluminescent diodes,
etc. (subclass 935 takes precedence) [G04G 9/04]
947 ...Using multiplexing techniques [G04G 9/04]
948 ...Provided with date indication [G04G 9/04C]
949 ...Provided with means for displaying at will a time-indication
or a date or a part thereof [G04G 9/04D]
950 ..Using light valves, e.g., liquid crystals, etc. [G04G 9/06]
951 ...Using multiplexing techniques [G04G 9/06B]
952 ...Using a drop of liquid suspended by capillary forces and
moved by an electric field [G04G 9/06F]
953 ...Using mechano-optical means [G04G 9/06G]
954 .By building up characters using a combination of indicating
elements, e.g., by using multiplexing techniques, etc. [G04G
9/08]
955 ..Using multiplexing techniques [G04G 9/08B]
956 ..Provided with date indication [G04G 9/08C]
957 ..Provided with means for displaying at will a time indication
or a date or a part thereof [G04G 9/08D]
958 ..By controlling light sources, e.g., electroluminescent diodes,
etc. (subclass 935 takes precedence) [G04G 9/10]
959 ...Using multiplexing techniques [G04G 9/10B]
960 ...Provided with date indication [G04G 9/10C]
961 ...Provided with means for displaying at will a time indication
or a date or a part thereof [G04G 9/10D]
962 ..Using light valves, e.g., liquid crystals, etc. [G04G 9/12]
963 ...Using multiplexing techniques [G04G 9/12B]
964 ...Provided with date indication [G04G 9/12C]
965 ...Provided with means for displaying at will a time indication
or a date or a part thereof [G04G 9/12D]
966 ...Using mechano-optical means [G04G 9/12G]
967 PRODUCING OPTICAL SIGNALS AT PRESELECTED TIMES [G04G 11/00]
968 PRODUCING ACOUSTIC TIME SIGNALS [G04G 13/00]
969 .At preselected times, e.g., alarm clocks, etc. [G04G 13/02]
970 ..Details [G04G 13/02A]
971 ...Adjusting the duration and/or amplitude of signals [G04G
13/02A2]
972 ..Acting only at one preselected time [G04G 13/02B]
973 ..Acting at a number of different times [G04G 13/02C]
974 ..Combined with a radio [G04G 13/02D]
975 TIMEPIECES COMPRISING MEANS TO BE OPERATED AT PRESELECTED TIMES
OR AFTER PRESELECTED TIME INTERVALS (subclasses 967 and 968 take
precedence; pulse delay circuits H03K 5/13; electronic time
delay switches H03K 17/28; electronic time program switches
which automatically terminate their operation after the program
is completed H03K 17/296; electronic timers digest 802) [G04G
15/00]
976 .Acting only at one preselected time or during one adjustable
time interval [G04G 15/00B]
977 .For operating at a number of different times (cigar or
cigarette receptacles or boxes with means for limiting the
frequency of smoking A24F 15/00B) [G04G 15/00C]
* ******************************
* DIGEST
* ******************************
DIG 1 PAPER COPIES IN NUMERICAL ORDER OF ALL U.S. PATENTS IN
SUBCLASSES 2-977