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: 313 Class Title: ELECTRIC LAMP AND DISCHARGE DEVICES Subclass Subclass Number Title 1 PLURAL UNIT 2.1 .Cathode ray tube 3 .Inter-electrode connection 5 .Control electrode unit 6 ..Plural control electrode units 7 WITH EVACUATING PUMP 8 ARC AND SEPARATE INCANDESCENT BODY 9 FILAMENT AND SEPARATE INCANDESCENT BODY 10 WITH TEMPERATURE INDICATOR 11 WITH TEMPERATURE MODIFIER 11.5 .Spark plug type 12 .Recirculating systems 13 .Having control means for the temperature modifier 14 .Pyroelectric type device 15 .Electric heater 16 ..For liquid electrode 17 .Double wall, jacket or casing for envelope 18 ..For conductive envelope devices 19 ...With plural electrode temperature modifying 20 ...With internal temperature modifying baffle 21 ...Cylindrical electrode type envelope 22 ..Fluid circulation type 23 ...Plural electrode temperature modifying 24 ...Flow directing means in casing 25 ..Sealed casing for envelope 26 ...Integral double wall type of envelope 27 ..Heat conserving or insulating type 28 ..Plural electrode temperature modifying 29 .For liquid electrode 30 .Hollow electrode or lead 31 ..Tubular coil electrode 32 ..Closed duct type (e.g., for liquid) 33 .Envelope with internal temperature modifying baffle 34 .Envelope with condensing chamber or surface 35 .Using liquids or fluid flow directing means 36 ..Jacket or casing 37 .For filament or heated cathode 38 ..Hollow shield around filament or cathode 39 .For electrode within an envelope 40 ..Radiating type surface 41 ...Material, roughened surface 42 .Mounted on lead-in or electrode support 43 .For lead-in-seal or stem protection 44 .For envelope wall 45 .Radiating type surface 46 .Having heat conducting path 47 .Heat conserving or insulating type 48 WITH HANDLE 49 WITH DETACHABLE ELECTRICAL CONNECTOR OR SUPPORT 50 .Resilient or vibration damping 51 .Electrical connector 52 CONVERTIBLEE 53 FLAME OR EXPLOSION TYPE 54 WITH RADIOACTIVE MATERIAL 62 CYCLOTRONS 359.1 WITH POSITIVE OR NEGATIVE ION ACCELERATION 360.1 .Plural apertured electrodes 361.1 .Means for deflecting or focusing 362.1 .Supplying ionizable material (e.g., gas or vapor) 363.1 .Extraction or target electrode 364 CATHODE RAY TUBE 365 .Image pickup tube 366 ..Semiconductor depletion layer type 367 ...Mosaic 368 ....Plural junction 369 ..Mechanically responsive (e.g., sound) 370 ..Particular transparent conductor 371 ..With optical element 372 ...Light conducting fiber or rod 373 ..With photoemissive cathode 374 ...Mosaic 375 ...Plural photoemissive layers 376 ...With target 377 ....Secondary electron emissive 378 ....Support 379 ...Secondary electron emissive 380 ...Special ray sensitive 381 ...Image dissector 382 ...Focusing 383 ...Electrode or electrode support 384 ..Photoconductive 385 ...Layer composition 386 ....Plural layers 387 ...Secondary electron emissive 388 ...Special ray sensitive 389 ...Focusing 390 ...Electrode or electrode support 391 .Storage 392 ..Depletion layer type storage element 393 ..Double ended 394 ..Continuous storage element 395 ..Foraminous storage element 396 ..With non-beaming gun 397 ..With display 398 ...Integral or contiguous storage and display element 399 .Secondary emissive electrode 400 ..With display 401 ..Monoscope 402 .Shadow mask, support or shield 403 ..Non-circular aperture 404 ..With resilient support 405 ...Bimetallic 406 ...With studs 407 ..With frame 408 ..With screen 409 .Plural beam generating or control 410 ..With character forming electrode 411 ..One cathode source of plural beams 412 ..Convergence 413 ..With deflectionn 414 ..With focusing and accelerating electrodes 415 ..With screen 416 ...Including non-planar elements 417 ..With electrode support 418 .Signal translating output electrode 419 ..Plural 420 .Electron permeable window 421 .Beam deflecting means 422 ..Flat tube type 423 ..Electron reflecting mirror 424 ..Ion trap 425 ..Centering 426 ..Plural 427 ...Three or more 428 ....With convergence 429 ....Field varied near screen (i.e., post deflection) 430 .....By external element 431 ....Plural magnetic 432 ...Electrostatic 433 ....Magnetic 434 ....Nonparallel or asymmetric 435 .....Nonplanar 436 ....Enclosed or overlapping 437 ....With distortion correction 438 ....With support 439 ..Electrostatic 440 ..With yoke 441 .Ray generating or control 442 ..With magnetic focus 443 ...Internal 444 ..Sandwiched electrodes 445 ..Canted electrode (i.e., ion trap) 446 ..Including cathode assembly 447 ...With control grid adjacent cathode 448 ....With anode 449 .....With additional electrode 450 ......With coating or spiral electrode 451 ......With support 452 ...With focus electrode adjacent cathode 453 ....Noncircular beam type 454 ....Nonplanar cathode 455 .....Brillouin beam type 456 ..With support for electrode 457 ...Parallel rod type 458 ..Electrode 459 ...Movable 460 ...Plural 461 .Screen 462 ..Scale or graticule 463 ..Electroluminescent 464 ..Incandescent type 465 ..Light valve type 466 ..Nonluminescent layer 467 ..Phosphor composition 468 ...Rare earth 469 ...Embedded in face plate 470 ..Mosaic 471 ...Beam indexing elementt 472 ...Dot type 473 ..Plural layer type 474 ..With optics 475 ...Light conducting fiber or rod 476 ..Support 477 R .Envelope 478 ..With external optical element 479 ..Coating or shielding 480 ..Composition 481 ..With getter or gas 482 ..Support for electrode or envelope 477 HC ..With details of high-voltage connector 93 GEIGER-MUELLER TYPE 523 PHOTOSENSITIVE 524 .With optical device 525 .Having phosphor screen 526 ..Proximity focus type 527 ..Photocathode responsive to phosphor 528 ..With electron multiplier 529 ..With control electrode 530 ..With photocathode on envelope 531 .Having plural photosensitive electrodes 532 .Photomultiplier 533 ..Having plural dynodes 534 ...Channel or circular type 535 ...Venetian blind type 536 ...Box or linear type 537 .Having a control electrode 538 .Gas phototube 539 .Responsive to ultraviolet radiation 540 .Having plural anodes or cathodes 541 .Having photocathode on tube wall 542 .Photocathode 543 ..With phosphor 544 ..With envelope 103 R .Secondary emitter type (e.g., electron multiplier) 103 CM ..Channel multiplier 104 .Plural secondary emissive electrodes 105 R ..Three or more 105 CM ...Channel multiplier 106 SECONDARY EMISSION PREVENTION 107 .Nonemissive material 107.5 VARIABLE WIDTH ELECTRON STREAM (E.G., MAGIC EYE) 483 WITH LUMINESCENT SOLID OR LIQUID MATERIAL 484 .With gaseous discharge medium 485 ..Phosphor on envelope wall 486 ...Including particular phosphor 487 ....Plural 488 ...Aperture-type tube 489 ...With protective coating or filter 490 ...With amalgam 491 ...Electrode structure or material 492 ....With shield or additional electrode 493 ...Envelope structure or material 494 .Coplanar electrodes 495 .Vacuum-type tube 496 ..Phosphor on anode segments 497 ...With accelerating or control electrodee 498 .Solid-state type 499 ..Semiconductor depletion layer type 500 ...Matrix or array 501 ...Light conversion 502 ..With phosphor embedding material 503 ..With particular phosphor or electrode material 504 ...Organic phosphor 505 ..With electrode matrix 506 ..Plural layers 507 ...With photosensitive layer 508 ...With piezoelectric layer 509 ...With dielectric layer 510 ..With character display (e.g., digits or letters) 511 ..Flexible 512 ..With envelope or encapsulation 513 WITH CHARACTER DISPLAY (E.G., DIGITS OR LETTERS) 514 .Gaseous discharge medium 515 ..With character-shaped envelope 516 ..Electrode with character-shaped aperture 517 ..With electrode display segments 518 ...With dielectric layer or coating 519 ...Multiple display (i.e., side-by-side) 520 ..With integrant display electrode 521 ...Stacked electrodes (i.e., superimposed) 522 .Incandescent filament display 110 WITH OPTICAL DEVICE OR SPECIAL RAY TRANSMISSIVE ENVELOPE 111 .Plural diverse optical devices 112 .Polarizer or special ray transmission (e.g., filter) 113 .Reflector 114 ..Plural reflectors 115 ..Multiple filament lamps 116 .Light diffusing 117 .Light valve or obscuring means 118 SPARK PLUGS 119 .Sealing-off valve for electrode chamber 120 .With fluid feed or air vent 121 .Reversible (e.g., part) 122 .Removable electrode on shell 123 .Plural series gaps 124 ..Intensifier in center electrode lead-in 125 .Movable electrode (e.g., for cleaning, adjustable) 126 ..Automatically moved (e.g., engine vibration) 127 .Cleaner (e.g., movable scraper) 128 .Plural insulated electrodes with individual lead-in 129 .With transparent part 130 .Non-conducting material in or adjacent gap (e.g., restricts spark) 131 R ..Non-shortest line spark and surface spark type 131 A ...Spark plugs with semiconductive material at the gap 132 .Capillary groove or space 133 .Ball electrode 134 .With radio shielding 135 .With particular connector structure 136 .Plural part center electrode lead-in 137 .Plural part insulating means 138 .Electrodes are pure figures of revolution about plug axis 139 .Ring or disk electrode (e.g., sector) 140 .Plural parallel gaps (e.g., main and standby, serratedd electrode) 141 .Particular electrode structure or spacing 142 ..Gap on and along axis 143 .Shaped electrode chamber, insulator end, shell skirt, baffle or gas directing means 144 .With specific joint structure 145 ..Between center electrode and insulator 146 WITH MOVABLE ELECTRODE OR SHIELD 147 .Plural 148 .Movable envelope wall 149 .Rotary 150 .Movable liquid electrode 151 .Thermal actuator 152 .Magnetic actuator 153 WITH MAGNETIC DEVICE 154 .For generating plural fields 155 .Electrode generates field 156 .Field transverse to discharge 157 ..Concentrically arranged electrode with axial field 158 ...Pole pieces facing electrode ends 159 ....Electrode support penetrates pole piece 160 .With envelope 161 ..Gas or vapor type 162 ..Three or more electrodes 163 LIQUID ELECTRODE DISCHARGE DEVICES 164 .Shock absorber for liquid 165 .Plural liquid electrodes 166 .Starting band or external electrode 167 .Apertured electrode (e.g., grid) interposed in discharge space 168 .Plural anodes in separate envelope chambers 169 .Plural anodes with anode arc shield 170 .Auxiliary starting or holding electrode 171 ..Immersed in liquid electrode 172 .Liquid in contact with plural electrodes 173 .Cathode spot anchoring 545 HAVING VALVE WITH GETTER, GAS/VAPOR GENERATING MATERIAL OR PRESSURE CONTROL MEANS 546 WITH FRANGIBLE CAPSULE CONTAINING GETTER, GAS OR VAPOR GENERATING MATERIAL 547 HAVING HEATING MEANS TO CONTROL GAS/VAPOR,GAS OR VAPOR GENERATING MEANS OR GETTER MEANS 548 .Incandescent lamp gettering 549 .Discharge device gettering 550 .Vapor generating 551 .Gas generating 552 HAVING PRESSURE CONTROL OF GAS OR VAPOR 553 WITH GETTER 554 .Plural 555 ..Diverse 556 .And vapor generator 557 .Incandescent lamp type 558 .Electrode includes getter, supports getter or is connected to getter 559 .Mounted on electrode support 560 .With structure to direct or shield from getter 561 .With contained getter 562 .Gas or vapor device type 563 HAVING GAS GENERATING MATERIALL 564 HAVING VAPOR GENERATING MATERIAL 565 .Mercury vapor material 566 .Electrode or electrode support includes material 567 WITH GAS OR VAPOR 568 .Having a particular total or partial pressure 569 ..Incandescent lamp 570 ..Greater than 760 torr 571 ...Includes mercury in gas or vapor fill 572 ..One torr thru 760 torr 573 ...Having specified envelope detail 574 ...With electrode structure 575 ....Composite 576 .....With rare gas 577 ..Less than .1 torr 578 .Incandescent filament lamp 579 ..Tungsten-Halogen cycle lamp 580 ..With filter, barrier, screen, shield, electric terminal or fuse 581 .Three or more electrode discharge device 582 ..Multiple gaseous discharge display panel 583 ...Having electric terminal detail 584 ...Having intersecting electrode sets 585 ....With three sets of electrodes 586 ....With dielectric member 587 .....And additional layer on member 588 ..Amplifier, cathanode, or ionic cathode 589 ..Counter, indicator or switching tube 590 ..With shield to prevent discharge between electrodes 591 ..Having cathode heater 592 ...With control electrode 593 ....Plural 594 ..Start electrode exterior to envelope 595 ..Internal start or control electrode between discharge electrodes 596 ...Strip electrode 597 ...Interposed apertured electrode 598 ....Mean free-path spacing 599 ....Plural serial apertured electrodes 600 ...Two interposed electrodes 601 ..Start electrode not in main discharge path 602 ...Trigger electrode concentric with discharge electrode 603 ...Triggerable vacuum gap device 604 ..Plural serial electrodes 605 .Mean free-path spacing of envelope portions or content parts 606 ..Electrode spacing related to mean free path length 607 .Having electrode exterior to envelope 608 .Single electrode type discharge device, or including particulate material 609 .Having baffle, partition or constricting means affecting discharge 610 ..Partition 611 ..Constriction means 612 ...Substantially full length of discharge path 613 .Having electrode shield 614 ..With anode shield 615 ..Crater electrode with shield 616 ..With positive ion or cathode shield 617 .Having spur electrodee 618 .Having hollow cathode 619 .Negative or cathode glow device 620 .Having specified electrode spacing 621 .Having electrodes with geometrical relationship 622 .Discharge device with diverse electrodes 623 .Having electrode lead-in or electrode support sealed to envelope 624 ..End cap seal 625 ..End plug seal 626 .Having lead-in shield 627 .Having electrode heated by space discharge current 628 ..Coil type 629 .Having resistance heated cathode 630 .Having electrode of alkali, alkaline or rare earth material 631 .Having particular electrode structure 632 ..Cathode or anode 633 .Electrode composition 634 .Envelope with particular structure 635 ..Envelope layer or coating 636 .Envelope composition 637 .With particular gas or vapor 638 ..With metal vapor 639 ...Mercury vapor 640 ....And rare earth metal 641 .....With rare gas 642 ....And rare gas 643 ..One or more rare gases 230 DISCHARGE DEVICE WITH POSITIVE ION EMITTER 231.01 FLUENT MATERIAL SUPPLY OR FLOW DIRECTING MEANS 231.11 .Lightning or surge arrester 231.21 ..Expulsion type 231.31 .Plasma 231.41 ..Arc discharge type 231.51 ...With tangential fluent supply 231.61 ...Electromagnetic output (i.e., light) 231.71 .Arc discharge lamp or radiation source 232 ELECTRODES IMMERSED IN LIQUID 233 INVOLVING PARTICULAR DEGREE OF VACUUM 234 ELECTRODE EXTERIOR TO ENVELOPE 235 IMPERFECT ELECTRICAL CONTACT BETWEEN ELECTRODES 236 STAND-BY ELECTRODE TYPE (WITH SPARE ELECTRODE) 237 WITH ELECTRODE REPLACEMENT MEANS OR DEMOUNTABLE 238 WITH SUPPORT AND/OR SPACING STRUCTURE FOR ELECTRODE AND/OR SHIELD 239 .For shield 240 ..Shield supported by electrode, electrode support or spacer 241 ...Extending across ends of plural discharge device electrodes 242 ..Shield supported by or forming part of envelope stem 243 .For plural electrodes of discharge device 244 ..Envelope supports or forms electrode 245 ...Plural discharge spaces formed by three or more electrodes 246 ...Electrode forms part of envelope 247 ....Hollow electrode with another electrode supported by end structure 248 ...Conductive envelope supports plural electrodes 249 ...Elongated envelope with electrodes spaced along length 250 ....With spacer between electrodes or electrode supports 251 ....Plural electrodes supported along the length of a wire, rodd or tube 252 ...Support structure supported by the envelope 253 ....At spaced or opposed portions of envelope 254 .....At three or more portions of envelope 255 .....Same electrode supported by spaced or opposed portions 256 ....Insulating or ceramic support rod or tube 257 ....With spacer between electrode or electrode supports 258 .....Spacer between envelope and support or electrode 259 .....Insulating coating forms spacer 260 .....Plate or bar extending across ends of electrodes 261 ......Plates or bars at opposed ends of electrodes 262 .....Ceramic bead for joining parts 263 ....With indirectly heated cathode 264 ....With U-shaped, V-shaped or plural sections filament 265 ....Apertured electrode (e.g., grid) supported between two other electrodes 266 ....Stem or envelope structure 267 ..Plural rod electrodes 268 ..Insulating spacer between discharge electrodes 269 .With vibration damping device 270 .For indirectly heated cathode 271 .For filament 272 ..Plural filaments 273 ..Plural section filament 274 ..Supports supported by opposed parts of envelope 275 ..Insulator supports filament 276 ...Conductive member supports insulator 277 ...Insulating standard supports filament brackets or anchors 278 ..Tension device for filament 279 ..Support intermediate of filament ends 281 .Support mounted in or around aperture in conductive wall or plate 282 .Conductive envelope supports electrode 283 .Electrode supported by envelope 284 ..Electrode supporting member supported by envelope 285 ...Supporting wire, rod or tube supported by envelope 286 ....At spaced or opposed portions of envelope 287 ....Support collar surrounding envelope stem 288 ....Spacer between envelope and support or electrode 289 ....Ceramic or insulating support 290 ....Stem or envelope structure 291 ..Electrode formed by coating on envelope 292 .Supporting and/or spacing elements 293 DISCHARGING DEVICES WITH APERTURED ELECTRODE (E.G., GRID) INTERPOSED BETWEEN TWO ELECTRODES 294 .Non-uniformly spaced from another electrode 295 .Interposed electrode with non-uniform mesh area (e.g., variable mu) 296 .Plural interposed apertured electrodes 297 ..Serially arranged 298 ...Plural inter-electrode discharge spaces 299 ...Aligned apertures (e.g., beam power) 300 ...Three or more serially arranged 301 ..Plural inter-electrode discharge spaces 302 .Plural cathodes 303 .Three or more non-emissive electrodes (e.g., plural anodes) 304 .Plural-parallel-section cathode with electrode surrounding each sectionn 305 DISCHARGE HEATED ANODE TYPE (E.G., CATHANODE) 306 DISCHARGE DEVICES HAVING THREE OR MORE ELECTRODES 307 .Four or more electrodes 308 .Discharge control electrode 309 DISCHARGE DEVICES HAVING A MULTIPOINTED OR SERRATED EDGE ELECTRODE 310 DISCHARGE DEVICES HAVING A THERMIONIC OR EMISSIVE CATHODE 311 DISCHARGE DEVICES HAVING AN ELECTRODE OF PARTICULAR MATERIAL 312 WITH CASING OF JACKET FOR ENVELOPE 313 WITH ELECTRICAL SHIELD OR STATIC CHARGE DISTRIBUTION MEANS 314 NON-REPAIRABLE 315 INCANDESCENT LAMPS 316 .Plural filaments or glowers 317 WITH ENVELOPE 318 .With base or connector 323 COMBINED 324 .With casing or jacket 325 MISCELLANEOUS DISCHARGE DEVICES 326 ELECTRODE AND SHIELD STRUCTURES 327 .Self-baking electrodes (e.g., Soederberg) 328 .Liquid electrode container 329 .Mosaic electrodes 331 .With lead wire or connector 332 ..Inserted section or material 333 ..Filament or wire shield or electrode 334 ..Non-metallic electrode or shield 335 ..Rod electrode or shield 336 .Point source cathodes 337 .Indirectly heated cathodes 338 ..Plural separate cathode sections 339 ..Interior emissive hollow cathodes 340 ..Insulating material between heater and cathode 341 .Filament or resistance heated electrodes 342 ..Non-inductive 343 ..Plural wires or strands 344 ..Coiled 345 ..Coated 346 R .Cathodes containing and/or coated with electron emissive material 346 DC ..Dispensator cathode 347 .Incandescible upon electron bombardment 348 .Foraminous electrodes (e.g., grids) or shields 349 ..Non-uniform mesh area or non-straight electrodes or non-uniform cross sectional area electrodes 350 ..Rods, wire or mesh supported on rod or post 351 .Multi-pointed or serrated edge electrode 352 .Composite electrodes or shields 353 ..With non-discharge-sustaining portion 354 ..Cored rod 355 ..Coated or laminated 356 .Tubular or hollow sleeve 357 .Rods 358 MISCELLANEOUS (E.G., ELECTROLYTIC LIGHT SOURCE) * ****************************** * DIGEST * ****************************** DIG 7 Bombardment induced conductivity