Index to the US Patent Classification

Index to the US Patent Classification

What follows is part of the Index to the US Manual of Classifications for patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retreive 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.

Enter class/subclass code:


DDT, IN DRUG ........................ 514/748

DDVP, IN DRUG ....................... 514/136

DACRON INSULATED CABLE .............. 174/100

DACRON T M (SEE ALSO SYNTHETIC RESIN
 OR NATURAL RUBBER) .................528/308.1

DADO
  CUTTER ............................144/222
  LAPPED MULTIPLANAR SURFACING ......52/536
  MACHINE ...........................144/133.R

DAGGERS ............................. 30/295

DAGUERREOTYPY ....................... 354/2+
  ANALYSIS AND ANALYTICAL CONTROL
     APPARATUS ......................422/50+
  APPARATUS DESIGN ..................D16

DAIRY TYPE BOTTLES .................. D09


DAIRY, FOOD TREATMENT ............... 99/452+

DAM ................................. 405/107+
  DENTAL ............................433/136+
  MORTAR ............................52/421
  POWER EXTRACTION FROM WATER .......405/78

DAMPENING (SEE DAMPER; MOISTENER;
 STEAMING) ..........................68/5.R
  CONSUMABLE ELECTRODE ELECTRIC LAMP
     ELECTROMAGNET FEEDING WITH      314/128
       DAMPING ......................314/128
     FEED WITH DAMPING ..............314/99+
  INSTRUMENT MECHANISM DAMPING ......73/430
     BOURDON TUBE ...................73/739+
  MUSICAL INSTRUMENT DAMPING ........84
  OVERHEAD ELECTRIC CONDUCTOR WITH
     VIBRATION DAMPING ..............174/42
  PAPER MAKING CALENDER .............10/73+
  PLANOGRAPHIC PRINTING .............101/147+
     COPYING APPARATUS ..............101/132.5
  PRESSURE COMPENSATOR
     PIPES AND TUBULAR CONDUITS .....138/26+
     PUMPS COMBINED .................417/540+
  VIBRATION DAMPING SUPPORT .........248/562+
     NONRESILIENT ...................248/636
     RESILIENT ......................248/562+
     SUSPENSION .....................248/610+


DAMPER
  EAR SOUND STOPPERS ................128/864+
  ELECTRIC MEASURING INSTRUMENTS FOR 324/125
  ELECTRIC MUSICAL INSTRUMENT FOR ...84/600
     ENVELOPE SHAPING (I.E., ATTACK, 84/627
       DECAY, SUSTAIN, OR RELEASE) ..84/627
     ENVELOPE SHAPING (I.E., ATTACK, 84/663
       DECAY, SUSTAIN, OR RELEASE) ..84/663
     ENVELOPE SHAPING (I.E., ATTACK, 84/702
       DECAY, SUSTAIN, OR RELEASE) ..84/702
     ENVELOPE SHAPING (I.E., ATTACK, 84/738
       DECAY, SUSTAIN, OR RELEASE) ..84/738
     VOLUME CONTROL .................84/633
     VOLUME CONTROL .................84/665
     VOLUME CONTROL .................84/711
     VOLUME CONTROL .................84/741
  ELECTRIC WINDING FOR ALTERNATING   310/183+
     OR DIRECT CURRENT DYNAMOS ......310/183+
  FLUID DAMPER FOR PLANETARY GEAR    475/92
     ELEMENT ........................475/92
  FLYWHEELS AND ROTORS HAVING .......74/574
  FURNACE DRAFT .....................110/163
  HEAT EXCHANGER ....................165/69
  IMPACT ABSORPTION .................49/9
     BY FLEXIBLE BARRIER ............49/9
     BY PLASTIC DEFORMATION .........188/371+
     BY RESILIENT DEFORMATION .......188/268
  INERTIAL VIBRATION DAMPER .........188/378+
  MICROPHONE OR DIAPHRAGM ...........381/158
  PIANO DAMPER HEAD AND STEMS .......84/255
     HARMONIC .......................84/234
     HELD ...........................84/218
     LIFTED .........................84/217
  RAILWAY TRUCK .....................105/193
  STOVE OR FURNACE FLUE .............126/285.R+
     OPEN EVAPORATING PANS HAVING ...159/41
     TIME CONTROLLED ................126/285.5
  WEIGHING SCALE ....................177/184
  ZITHER ............................84/287+

DAMPING DIODE ....................... 313/317
  WITH EMISSIVE CATHODE .............313/310
  WITH THERMIONIC CATHODE ...........313/310
  WITH TWO CATHODES AND ANODES ......313/1


DANCING
  FIGURE TOYS .......................446/330+
  SHOES .............................36/8.3
  TEACHING ..........................434/250

DANDY ROLL .......................... 162/314

DARK
  CABINET PHOTOGRAPHY ...............354/307+
  LANTERN WITH SHUTTER OR SCREENS ...362/167+
  ROOM ..............................354/307+
     ILLUMINATORS ...................362/293
     VENTILATORS ....................454/49+

DARNING
  KNITTING ..........................66/2
  LAST ..............................223/100
  SEWING MACHINES ...................112/121
     DESIGN .........................D15/66+
     ELEMENTS .......................112/236
  WEAVING ...........................139/33.5

DART ................................ 273/416+
  DESIGN ............................D22/115
     AMUSEMENT DEVICES ..............D21/49
     PROJECTOR ......................D22/107
  PROJECTOR .........................124/22

DASHBOARD
  LAND VEHICLE ......................296/70+
  LIGHTING
     AUTOMOBILE .....................362/23+
     TROLLEY CAR OR RAIL CAR ........362/77
  MOTOR VEHICLE .....................180/90


DASHER
  FOOD ..............................366/69+
  GAS AND LIQUID CONTACT ............261/32+

DASHPOT
  CHECK VALVE .......................137/514+
  CLOSURE CHECK .....................16/82+
  CLOSURE CHECK BRAKE TYPE ..........188/266+
  DOOR CHECK AND CLOSER .............16/49+
  ELECTRODE FEED RETARDER ...........314/99+
  ELECTROMAGNETIC ELECTRODE          314/128
     OPERATOR COMBINED WITH .........314/128
  GAS & LIQUID CONTACT APPARATUS ....261/DIG.18
  SPRING COMBINED WITH ..............267/195+
  SWITCH CONTACT RETARDER ...........20/34
  VALVE RETARDER ....................251/48+
  WATER CLOSET ELEMENTS .............4/248
  WATER CLOSET TANK VALVE ...........4/388+

DASYMETERS .......................... 73/30.1+

DATA COMPARING
  CALCULATOR ........................235/431
  CARDS PERFORATED SORTING ..........209/613
     CONDITION RESPONSIVE ...........209/554
  LENS ..............................333/248+
  METER FLUID FLOW ..................73/196+
  PUNCHING MACHINE ..................234/34

DATA CONVERSION
  ANALOG TO DIGITAL .................341/126+
  CARD OR TAPE PUNCH ................234/69+
  CRYPTOGRAPHIC .....................380
  DIGITAL TO ANALOG .................341/126+
  DIGITAL TO DIGITAL ................341/50+
  RADIX CONVERSION ..................341/50+
  WITH CARD OR TYPE PUNCH ...........234/69+
  WITH COMPUTATION ..................341/75+
  WITH VISUAL DISPLAY ...............345+


DATA HANDLING
  SELECTIVE PUNCHING ................234
     STORAGE ........................234/55+

DATA PRESENTATION ................... 395/100+

DATA PROCESSING, ELECTRICAL ......... 364
  APPLICATIONS ......................364/400+
  COMPUTERS, GENERIC CONTROL ........364/130+
  CONTROLLED BY RECORD MEANS ........235/375+
  ELECTRICAL COMPUTERS AND ..........395
  GENERAL PURPOSE DIGITAL DATA       395
     PROCESSORS .....................395
  GRAPHICS ..........................395/100+
  MEASURING,TESTING,OR MONITORING ...364/550+
  MICROPROCESSORS ...................395
  PROGRAMMED PROCESSING .............395
  SELECTIVE PUNCHING, FOR ...........234/55+
  SYNCHRONOUS TRANSMISSION OF DIGITAL375/106+
     DATA ...........................375/106
  TEXT/DOCUMENT .....................395/144+
  THREE DIMENSIONAL .................395/119+
  VIDEO COLOR SIGNAL DERIVED BY DATA 358/81
     PROCESSOR ......................358/81

DATA STORAGE
  DYNAMIC INFORMATION STORAGE OR     369
     RETRIEVAL ......................369
     MAGNETIC .......................360
  REGISTERS ELECTRICAL ..............377
  REGISTERS MECHANICAL ..............235
  STATIC INFORMATION STORAGE OR      365
     RETRIEVAL ......................365

DAUBER .............................. 15/209.1+
  ANIMAL ANTIVERMIN TREATMENT .......119/157
  POLISHER COMBINED .................15/107+
     KIT INCLUDING POLISH ...........401/118+
  SUPPLY CONTAINER CLOSURE ATTACHED .401/126+


DAUNOMYCINONE ....................... 552/201

DAVENPORTS, I.E., SOFA BEDS ......... 5/12.1+

DAVIT ............................... 114/368+

DAVY LAMP ........................... 362/164+

DAY BEDS ............................ 5/12.1+

DC TO AC CHOPPER .................... 363/124+

DEAD BOLT FOR LOCK .................. 70/113+

DEAD CENTER OVERCOMING .............. 74/36

DEAD END CONNECTOR CORD HOLDER ...... 24/115.R+

DEAD MAN TYPE ANCHOR ................ 52/166

DEAD MANS SWITCH .................... 191/1.R
  SWITCH STRUCTURE ..................20


DEADENERS (SEE DAMPENING)
  GEARING HAVING PLURAL SECTIONS ....74/443
  RAILWAY
     CAR WHEEL ......................295/7
     CUSHIONING OF TRACK ............238/283+
     ROLLING STOCK ..................105/452
     TRACK ..........................238/382

DEALKYLATION (SEE CRACKING)
  AROMATIC HYDROCARBON SYNTHESIS ....585/483
  FOAM BREAKING .....................252/321
  MINERAL OIL .......................208/46+

DEBARKING ........................... 144/340

DEBONING
  CARCASSES .........................452/135+

DEBRIS ACCUMULATING PENCIL 30/453+
 SHARPENER ..........................30/453+

DEBRIS CONTROL ...................... 29/DIG.5
  CHUTES ............................29/DIG.102
  RECEPTACLE, REMOVER ...............29/DIG.79
  REMOVER, CATCHER, DEFLECTOR .......29/DIG.94
  REMOVER, PLURAL TYPE ..............29/DIG.61
  SEPARATORS FROM WORKPIECE .........29/DIG.53

DECADE COUNTER
  ELECTRONIC TUBE TYPE ..............377/103
  GAS TUBE ..........................315
  OSCILLATOR ........................377


DECAHYDRONAPHTHALENE
 (SEE ALICYCLIC HYDROCARBON)
  NAPHTHALENE HYDROGENATION .........585/266+
  SYNTHESIS .........................585/350+
     HYDROGENATION OF UNSATURATED    585/266+
       HYDROCARBON ..................585/266+

DECAL SEE DECALCOMANIA

DECALCOMANIA (SEE TRANSFER) ......... D20/11
  EXPOSABLE ADHESIVE LAYER ..........428/40+
  FRAUD OR TAMPER DETECTING .........428/915*
  MADE BY COATING ...................427/147+
  PROCESS OF TRANSFER ...............156/230+
  STOCK MATERIAL ....................428/914*

DECALIN (SEE ALICYCLIC HYDROCARBON)

DECANTER
  COFFEE ............................222/475.1
  DESIGN ............................D07/300+
  DISTILLATION SYSTEMS SEPARATORY ...202/204
  FILTER COMBINED ...................210/299+
     HEATING MEANS ..................210/182+
  GAS AND LIQUID CONTACT ............261/7+
  LIQUID SEPARATION .................210/513+
  STARCH ............................127/27

DECANTING ........................... 210/767+
  FILTERING COMBINED ................210/806

DECAPITATOR
  CHICKEN ...........................452/64
  FISH ..............................452/166+


DECARBONIZING
  ABSORBENTS ........................502/20+
  CATALYSTS .........................502/20+
  MINERAL OIL VAPORIZING COMBINED ...208/347+
     APPARATUS ......................196/122
     CONVERSION COMBINED ............208/48.R
  PROCESSES .........................134/39
     HEATING COMBINED ...............134/20
  STILLS ............................201/2
     APPARATUS ......................202/241

DECARBOXYLATION AROMATIC   562/479
 POLYCARBOXYLIC ACID ................562/479

DECELERATION (SEE ACCELERATION)

DECELEROMETER ....................... 73/514+

DECIBEL METER
  METER MOVEMENT ....................324/76.11+
  SOUND LOUDNESS MEASUREMENT ........73/646

DECIMAL POINT ON CALCULATORS ........ 235/61.DP
  BINARY CODED ......................377/33
  ELIMINATION .......................235/63.DE
  LOCATORS ..........................235/64.3

DECIPHERING SEE CRYPTOGRAPHY


DECK
  BRIDGE ............................14/6
  RAILROAD
     FREIGHT CARS WITH
       CONVERTIBLE DECKS ............105/370
     PASSENGER CARS DOUBLE DECKED ...105/340
     STOCK CARS WITH ................119/9
  SHIP ..............................114/85
  TYPE INSULATOR FOR ANTENNA ........174/158.R

DECKLING
  PAPER MAKING
     FINISHING ......................162/286
     WEB FORMING ....................162/310
  PINKING SHEARS ....................30/229+
  SHEET
     CUTTING ........................83
     TEARING ........................225

DECLADDING NUCLEAR FUEL ............. 252/625

DECODING (SEE CRYPTOGRAPHY)

DECOLLATOR .......................... 270
  WEB ...............................270/52.5

DECOLORIZING (SEE BLEACHING)
  LIQUIDS ...........................210/660+
     X-ART COLLECTION ...............210/917+

DECOMPOSING FAT ..................... 554/160


DECORATION (SEE ARTICLE BY NAME;
 ORNAMENT)
  BOW ROSETTE, POMPON ...............428/4+
  COLLAPSIBLE .......................428/12
  DISPLAYS AND EXHIBITORS ...........40/406+
     WITH SPECIAL EFFECTS ...........40/427+
  FEATHERS AND PLUMES ...............428/6
  FESTOON ...........................428/10
     COLLAPSIBLE ....................428/9
  FILAMENTARY .......................428/542.6
  FLORA, ARTIFICIAL .................428/17+
  LAMP HOUSING ......................362/362+
  LIGHTS ............................362/227+
     X-ART COLLECTION ...............362/806*
  PARTY TYPE ........................428/7+
  POLE, CAP .........................52/301
  ROOF FINIAL OR CRESTING ...........52/57
  SHEET-FORM ........................428/542.6
  TRIMMING FOR CLOTHING .............2/244
  TRIMMING FOR HAT ..................2/175.3
  TRIMSTRIP FOR BUILDING ............52/716.1+

DECORTICATING ....................... 19/5.R+

DECOUPLING FILTER ................... 333/181+

DECOY
  DESIGN ............................D22/125+
  TRAPPING ..........................43/2+
  WAR TRAINING ......................434/11

DEEP DRAWING METAL .................. 72/347+

DEER SLING .......................... 224/101+

DEFECATING APPARATUS ................ 127/11+


DEFECT COATING ...................... 430/938*

DEFIBERIZERS ........................ 241

DEFLATING TOOL FOR RESILIENT TIRES .. 81/15.4

DEFLECTION
  CATHODE RAY STREAM ................313/421+
  CATHODE RAY STREAM ................315/399
  GAS SEPARATION APPARATUS ..........55/434+
     GAS SEPARATION PROCESSES .......95/267+
     LIQUID TREATMENT ...............55/220+
  LAMP ARC ..........................313/153+
     CONSUMABLE ELECTRODE ...........314/20
  SOLID SEPARATOR
     GAS SUSPENSION .................209/143+
     LIQUID SUSPENSION ..............209/210
  TESTING ...........................73/849+
  WIND MOTOR WHEEL ..................416/9+

DEFLECTOR
  BEARING LUBRICATOR ................384/322+
  BLOWPIPE NOZZLE ...................239/461+
  BREATH ............................128/863
  DRIP ..............................52/97
  FLUID DISTRIBUTOR .................239/461+
  FLUID FUEL BURNER NOZZLE ..........239/461+
  FURNACE AIR .......................110/310+
  GAS SEPARATION APPARATUS ..........55/434+
     GAS SPARATION PROCESSES ........95/267+
  PIPE ..............................138/37+
  PLANT .............................172/517
  SCOURING DREDGER WITH CURRENT .....37/342+
  SHIP ARMOR ........................114/10
  SPRINKLER COMBINED ................239/461+
  WATER MOTOR .......................416/9+
  WINDMILL ..........................416/9+
  WINDOW WIND .......................454/196+
     VEHICLE ........................454/69+


DEFLOCCULATION
  LIQUID SEPARATION .................210/696+
  SOLID SEPARATION ..................209/5

DEFOLIANTS .......................... 504/162+

DEFORMING
  METAL .............................72
     CASTING COMBINED ...............29/527.5+
  PLASTICS
     APPARATUS ......................425
     PROCESSES ......................264
  SINGLE ROLL PER SE ................492/1+

DEFRIBRILLATORS ..................... 607/5+

DEFROSTER
  ELECTRICAL RESISTANCE HEATERS .....219/203
  HEAT APPLYING WINDOW CLEANER ......15/250.5
  MATERIAL APPLYING WINDOW CLEANER ..15/250.1
  REFRIGERATOR DESIGN ...............D08/29.2
  SURFACE HEATER ....................126/271.1+
  VEHICLE POWER PLANT HEATER
     COMBINED .......................237/12.3A
  WINDOW ............................52/171+
     BUILDING TYPE ..................454/198
     VEHICLE TYPE ...................454/121+

DEFROSTING
  DEFROSTING DEVICE .................D08/29.2
  HEAT PUMP .........................165/17
  REFRIGERATION APPARATUS ...........62/272+
     AUTOMATIC ......................62/151+
     AUTOMATIC, FROST INITIATED .....62/140
     FROST INDICATOR ................62/128
     PROCESS ........................62/80+


DEGASIFICATION ...................... 588
  HAZARDOUS OR TOXIC WASTE588
     DEGASIFICATION .................588

DEGASIFYING LIQUIDS
  APPARATUS .........................96/155+
  PROCESS ...........................95/241+

DEGASSERS ........................... 261/DIG.19

DEGAUSSING SEE DEMAGNETIZING
  MEANS IN CATHODE RAY TUBE CIRCUIT .315/8
  TELEVISION ........................361/150
  TORPEDO NETS ......................114/240.R

DEGRADABILITY ENHANCED SYNTHETIC      523/124+
 RESIN OR NATURAL RUBBER COMPOSITION 523/124+
  CELLULAR PRODUCT ..................521/916*

DEGREASING
  DISTILLATION
     STILL AND EXTRACTOR ............202/168+
     STILL EXTRACTOR ................202/170
  SOLIDS ............................134
  TEXTILES ..........................8/139+

DEGUMMING ........................... 8/138
  DYEING COMBINED ...................8


DEHALOGENATION
  HAZARDOUS OR TOXIC WASTE588
     DESTRUCTION ....................588
  PREPARATION OF EPOXY COMPOUNDS ....549/518+
  PREPARATION OF OLEFINES ...........585/641+
  PREPARATION OF UNSATURATED ESTERS .560/213

DEHORNERS
  ELECTRIC HEATER TYPE ..............606/164
  HAND TOOL .........................30

DEHUMIDIFIER ........................ D23/359+

DEHYDRATING OIL
  FATTY OILS ........................554/223+
  MINERAL OIL .......................208/187+
     ELECTRICAL SEPARATION ..........204/188+
     ELECTROPHORETIC OR
       ELECTROOSMOTIC ...............204/181.8+

DEHYDRATION (SEE DRIER)
  ACID ANHYDRIDES BY ................562/869+
  ACYCLIC KETONES FROM ALCOHOLS .....568/403+
  ALDEHYDES FROM ALCOHOLS ...........568/485+
  COMPOSITIONS ......................252/194
  CONCENTRATING EVAPORATING .........159
  DISTILLATION ......................203/12+
  FATTY OILS OR ACIDS ...............554/24+
  FOODS .............................426/443+
     APPARATUS ......................99/467
  GAS OR VAPOR CONTACT WITH SOLIDS ..34
  GAS SEPARATION ....................95
     REFRIGERATION COMBINED .........62/271
     REFRIGERATION COMBINED PROCESS .62/93+
  MINERAL OILS ......................208/187+
     ELECTRICAL .....................204/188+
     ELECTROPHORETIC OR
       ELECTROOSMOTIC ...............204/181.8+
  OLEFINE PRODUCTION BY .............585/638
  REFRIGERANT .......................62/474+
     AUTOMATIC ......................62/195
     PROCESS ........................62/85


DEHYDROABIETIC ACID ................. 562/404

DEHYDROANDROSTERONE ................. 552/636

7-DEHYDROCHOLESTEROL ................ 552/547

DEHYDROGENATION
  ACYCLIC KETONES FROM ALCOHOLS .....568/403+
  ALDEHYDES FROM ALCOHOLS ...........568/485+
  AROMATIC HYDROCARBON SYNTHESIS ....585/440
  DIOLEFIN HYDROCARBON SYNTHESIS ....585/616+
  ESTERS FROM ALCOHOLS ..............560/239
  MINERAL OIL .......................208/46+
  OLEFINES FROM HYDROCARBONS ........585/654+
  SYNTHESIS AROMATIC FROM ALICYCLIC .585/430

DEHYDROHALOGENATION
  ALICYCLIC HYDROCARBON SYNTHESIS ...585/359
  DIOLEFIN HYDROCARBON SYNTHESIS ....585/612
  OLEFIN HYDROCARBON SYNTHESIS ......585/641+

DEHYDROTHIOTOLUIDINE AZO COMPOUNDS .. 534/800

DEICER SEE THAWING
  AIRCRAFT ..........................244/134.C
  ANTENNA ...........................343/704
  CARBURETORS .......................261/DIG.2
  COMBUSTION PRODUCT AS MOTIVE FLUID 60/39.93
  TROLLEY COLLECTOR HEAD ............191/62

DEINKING
  PAPER STOCK .......................162/4+
  TEXTILES ..........................8/137


DELASTING ........................... 12/15.1

DELAY NETWORKS
  DELAY LINES INCLUDING
     A LUMPED PARAMETER .............333/138+
     ELASTIC BULKWAVE PROPAGATION    333/141+
       MEANS ........................333/141+
     ELASTIC SURFACE WAVE 333/150+
       PROPAGATION MEANS ............333/150+
     LONG LINE ELEMENTS .............333/156+
  ELECTRONIC TUBE SYSTEM ............328/55

DELINTER ............................ 19/40+
  CARBONIZING PROCESSES .............8/140

DELINTING COTTON SEED ............... 47/1.1
  PROCESSES .........................47/58
     FLUID TREATMENT ................8/140

DELIVERY
  COLLECTION RECEPTACLE .............232
     COINS ..........................232/64+
     LETTER BOX CHUTE ...............232/53
  CONVEYER ..........................198
     CARRIER CONTROLLED SELECTIVE ...198/570+
  DUMPING VEHICLE WITH CHUTE ........298/7
  LETTER BOX ........................232/17+
  MAIL FROM AIRCRAFT ................258/1.2+
  PLANTING CHUTE ....................111/76
  RAILWAY MAIL ......................258
  RAILWAY SELECTIVE .................104/88+
  RECORD HOLDER .....................312/9.11+
  SHEET .............................271/278+
  STORE SERVICE .....................186/3

DELRIN T M (POLYOXYMETHYLENE) ....... 528/270


DELUSTERING
  CELLULOSE ETHER OR ESTER106/192
     COMPOSITIONS ...................106/192
     VISCOSE ........................106/166
  COATING OR IMPREGNATING PROCESSES .427/170

DEMAGNETIZING ....................... 361/267
  DEMAGNITIZER ......................D13/183
  ERASE,HEAD ........................360/118
  GENERAL RECORDING BIASING,ERASING .360/66
  OF CLOCKS .........................968/783
  SORTING TREATMENT .................209/8

DEMIJOHNS SEE CARBOY ................ D09/517

DEMODULATOR ......................... 329

DEMONSTRATING APPARATUS OR PRODUCT .. 434/365+

DEMONSTRATOR RADIOACTIVITY
 (SEE RADIOACTIVITY DEMONSTRATOR)

DEMOUNTABLE RIM ..................... 301/10.1+

DEMULSIFYING COMPOSITIONS ........... 252/358

DENATURED COMPOSITIONS .............. 252/365
  ALCOHOL ...........................252/366


DENSITOMETER
  EMULSION EXPOSING PRINTER .........354/20
  EMULSION OPAQUENESS MEASURING .....356/436+

DENSITY
  ANALYSIS GAS ......................73/30.1+
  ANALYSIS LIQUIDS ..................73/32.R+

DENT REMOVER SHEET METAL ............ 72/457


DENTAL AND DENTISTRY ................ 433
  AMALGAMS AND ALLOYS ...............420/526
     AMALGAM MIXER, EG DENTAL FILLING366/602*
  APPARATUS,FIXED ...................D24/176+
  APPARATUS,PORTABLE ................D24/152+
  CABINET ...........................312/209
  CASSETTES .........................378/168
  CHAIRS ............................297/68+
     DESIGN .........................D06/334
  COMPOSITIONS ......................106/35
  CONTAINERS FOR DENTAL USE .........206/63.5
  DENTURES ..........................433/167+
  DIE SHAPING .......................72
  ENGINES ...........................433/103+
  EQUIPMENT STANDS ..................433/25+
  FILLINGS ..........................433/226+
  FLOSS .............................132/321
     HOLDERS ........................132/323+
       DESIGN .......................D28/64
  IMPRESSION DEVICES ................433/34+
  IMPRESSION MATERIAL ...............106/38.2+
  INSTRUMENTS .......................433/25+
  MEDICINES .........................424
  MOLDING DEVICES ...................425/2
  MOLDING DEVICES ...................425/175+
  MOLDING DEVICES ...................249/54
     FLASKS .........................425/175+
     FLASKS FOR METAL CASTING .......164/376
     MOLDS ..........................425/175+
  MOLDING PROCESSES .................264/16+
  ORTHODONTIC DEVICES ...............433/2+
  PRACTICE ..........................433
  PROCESSES MANUFACTURING ...........29/160.6
  SPITTOONS .........................4/263+
  SPOTLIGHTS ........................362/257+
     X-ART COLLECTION ...............362/804*
  SUPPLY PACKAGES ...................206/63.5
  TEACHING DEVICES & METHODS ........434/263
  TEETH .............................433/167+
  TOOL CONTAINER ....................206/368+
  WASTE RECEPTACLES .................206/63.5

DENTIFRICES ......................... 49

DENTIPHONE
  ACOUSTIC HEARING AID ..............181/127
  ELECTRICAL HEARING AID ............381/68.3


DENTISTRY SEE DENTAL ................ 433
  DESIGN ............................D24

DEODORANT
  BODY ..............................424/65+
  COSMETICS CONTAINING ..............424/65+
  FERTILIZER CONTAINING .............504/101+
  MILK ..............................426/488
  NON BODY ..........................424/76.1+
  PRESERVING, DISINFECTING, AND      422/5
     STERILIZING ....................422/5

DEODORIZER OR OZONIZER .............. D23/366

DEOXIDANT COMPOSITIONS .............. 252/188.1+
  DESCALING COMPOSITIONS CONTAINING .252/81
  WATER SOFTENING OR SCALE252/178
     INHIBITING COMPOSITIONS CTG ....252/178

DEPHLEGMATORS
  MINERAL OIL .......................196/139
  STILL COMBINED ....................202

DEPILATING
  ANIMAL CARCASS ....................452/71+
  COMPOSITIONS
  ELECTRIC NEEDLE ...................606/44
     NEEDLE SUPPORTS ................606/44
  FERMENTATIVE ......................435/265
  HIDES AND SKINS ...................8/94.16
  MECHANICAL ........................19/2+

DEPOLARIZER ......................... 252


DEPOLARIZING
  COMPOSITIONS ......................252

DEPOLYMERIZATION TO OBTAIN
 HYDROCARBON MIXTURE ................585/241

DEPOSIT
  CERTIFICATES ......................283/59
  CHANGE GATES ......................232/14
  COLLECTION AND DEPOSIT RECEPTACLE .232
     CABINET COMBINED ...............312/211+
  DEPOSITORY DESIGN .................D99/28+
  LETTER BOXES ......................232/22
  MILK BOTTLE COLLECTION ............232/42
  RECEPTACLES FOR ...................232
  REGISTERING OR RECEIPT PRINTING
     COMBINED .......................109/24.1+
     PHOTOGRAPH OR MICROFILM RECORD .346/22
  SAFES OR DEPOSITORIES .............109
     DESIGN .........................D99/28+
     RECEIPTING MEANS INCLUDED ......109/24.1

DEPOSITOR
  BREAD ETC MAKING DEPOSITOR ........425/447+
     IMPLEMENT ......................222
  EXTERNAL BODY SURFACE .............604/289+
  MEDICINE ..........................604/47+
     SOLID MATERIALS ................604/57+
  PLANTING ..........................111
     DIBBLING .......................111/89+
     HILL ...........................111/34+
  TOY FIGURE FOR COINS ..............446/10+

DEPRESSOR
  NECKTIE ...........................24/53+
  RAILWAY CROSSING CABLE ............104/186
  TONGUE ............................128/15+
     ATOMIZER COMBINED ..............128/200.15


DEPTH BOMB .......................... 102/390+

DEPTH GAUGE
  COMPRESSIONAL WAVE ................367/99+
  DEPTH MEASURING INSTRUMENT ........D10/46+
  FLUID LEVEL .......................33
  GEOMETRICAL .......................33/713+
     GEOPHYSICAL EXPLORATION ........324/323+
     HYDROPHONE .....................367/141+
  LIQUID ............................73/290.R+
  RADAR .............................342/120+
     OTHER THAN AIR, EG, UNDERWATER .342/118
  SOUND .............................181

DERAILER
  ACTUATED CAB SIGNAL OR TRAIN
     CONTROL ........................246/170+
  CYCLE  OR MOTORCYCLE ..............D12/124
     ENCLOSURE OR GUARD .............D12/127
  GUARDS
     RAILWAY ........................104/242+
     STORE SERVICE ..................186/30
  LEVER AND CABLE OPERATOR ..........74/502.2
  RAILWAY
     CAR ATTACHED ...................104/261
     INTERLOCKING ...................246/163

DERAILLEUR (SEE DERAILER)

DERECTIFIERS ELECTRIC ............... 363

DEREVERBERATOR ...................... 381/66


DERMATOLOGICAL DEVICE
  LIGHT APPLICATION .................606/9
  NEEDLE SURGICAL ...................606/44
     SUPPORT ........................606/44
  SURGICAL INSTRUMENT ...............606/131+

DERMATOME ........................... 606/132

DERRICK
  EXTENSIBLE OR MOVABLE .............52/111+
  PUSHING AND PULLING ELEMENTS
     CABLE HOISTS ...................254/283+
     SCREW ..........................254/99
  SKELETON TOWER ....................52/651.1+

DESALTING SEA WATER ................. 210/642
  DISTILLATION ......................203/10
  FRACTIONAL CRYSTALLIZATION ........62/532+
     DIRECT CONTACT REFRIGERATION ...62/533+
  REVERSE OSMOSIS ...................210/652

DESCALING METAL ..................... 29/81.1+
  COMBINED WITH METAL DEFORMATION ...72/40

DESERPIDINE ......................... 546/55

DESICCANT ........................... 504/162+

DESICCATION (SEE DEHYDRATION; DRIER)


DESIGN (SEE DESIGN CLASSIFICATION)
  ADVERTIZING .......................D20
  APPAREL & HABERDASHERY ............D02
  ARMS, PYROTECHNIC ARTICLES,        D22/112
     ARTICLES FOR HUNTING, FISHING,  D22/112
     AND PEST KILLING ...............D22/112
  ARTISTS MATERIALS .................D19/35
  BRUSHWARE .........................D04
  BUILDING UNITS & CONSTRUCTION      D25
     ELEMENTS .......................D25
  CARE & HANDLING OF ANIMALS ........D30
  CASES NOT SPECIFIED ELSEWHERE .....D03
  CASKETS ...........................D99/1+
  COATING NONUNIFORM ................427/256+
  CONTAINERS ........................D09
  DEVICES & EQUIPMENT AGAINST FIRE   D29
     HAZARDS, FOR ACCIDENT PREVENTIOND29
     AND FOR RESCUE .................D29
  ELECTROLYTIC
     COATING ........................205/120+
     LIGHTING .......................26
  EMBROIDERY AND TRIMMINGS ..........D05
  EQUIPMENT FOR PRODUCTION,          D13
     DISTRIBUTION OR TRANSFORMATION  D13
     OF ELECTRICITY .................D13
  EXERCISING EQUIPMENT ..............D21/191+
  FISHING EQUIPMENT .................D22/134+
  FLUID DISTRIBUTION EQUIPMENT,      D23
     SANITARY, HEATING, VENTILATION  D23
     AND AIR CONDITIONING EQUIPMENT .D23
  FOODSTUFFS ........................D01
  FURNISHINGS .......................D06
  GAMES AND GAMBLING ARTICLES .......D21/1+
  HARDWARE ..........................D08
  HOUSEHOLD ARTICLES, NOT ELSEWHERE  D07
     SPECIFIED ......................D07
  HUNTING ARTICLES ..................D22
  JEWELRY, SYMBOLIC INSIGNIA AND     D11
     ORNAMENTS ......................D11
  KNITTING & NETTING ................D05
  LIGHTING ..........................D26
  LINOLEUM ..........................D05
  LUGGAGE & SPECIAL CONTAINERS & ....D03/76+
  MACHINES, NOT SPECIFIED ELSEWHERE .D15
     AGRICULTURAL ...................D15/10+
     CLEANING .......................D32/1+
     CONSTRUCTION ...................D15/10+
     DRIVE TRAIN ....................D15/148+
     DRYING .........................D32/8
     ENGINE .........................D15/1+
     FOOD OR DRINK RELATED ..........D07
     HEAT TREATMENT .................D15/144
     LUBRICATOR OR OIL COLLECTOR ....D15/150+
     MATERIAL WORKING, ETC ..........D15/122+
     PACKAGING OR WRAPPING ..........D15/145+
     PUMP OR COMPRESSOR .............D15/7+
     REFRIGERATION ..................D15/79+
     SEWING .........................D15/66+
     VIBRATOR OR SEPARATOR ..........D15/147
     WASHING ........................D32/6+
  MEASURING, TESTING OR SIGNALING    D10
     INSTRUMENTS ....................D10
  MEDICAL & LABORATORY EQUIPMENT ....D24
  MISCELLANEOUS ARTICLES NOT         D99
     SPECIFIED ELSEWHERE ............D99
  MUSICAL INSTRUMENTS ...............D17
  OFFICE MACHINERY ..................D18
  OFFICE MATERIALS ..................D19
  PACKAGES & CONTAINERS FOR THE      D09
     TRANSPORT OR HANDLING OF GOODS .D09
  PAPER MANUFACTURES ................D05
  PHARMACEUTICAL PRODUCTS,D24/100+
     TOILET ARTICLES & APPARATUS ....D24/100+
     COSMETIC PRODUCTS ..............D28
  PHOTOGRAPHIC, CINEMATOGRAPHIC AND  D16
     OPTICAL EQUIPMENT ..............D16
  PRINTING ..........................D18/50+
     OFFICE MACHINERY ...............D18
     OFFICE PHOTOCOPIERS ............D18/36+
  RECORDING, COMMUNICATION OR        D14
     INFORMATION RETRIEVAL EQUIPMENT D14
  SAFES AND VAULTS ..................D99/28+
  SEWING EQUIPMENT ..................D03/18+
  SIGNALING INSTRUMENTS .............D10
  SIGNS .............................D20/10+
  SMOKING ARTICLES ..................D27
  SPORTS EQUIPMENT ..................D21/191+
  STATIONERY, ARTISTS & TEACHERS     D19
     MATERIALS, & OFFICE EQUIPMENT   D19
     NOT ELSEWHERE SPECIFIED ........D19
  TEACHERS MATERIALS ................D19/59
  TENTS .............................D21/253+
  TESTING INSTRUMENTS ...............D10
  TOBACCO & SMOKERS SUPPLIES ........D27
  TOMBSTONE OR MONUMENT .............D99/17+
  TOOLS & HARDWARE ..................D08
  TOYS ..............................D21/59+
  TRANSPORTATION OR HOISTING ........D12
  TRANSPORTATION, CONTAINERS FOR ....D09
  TRAVEL CASES ......................D03
  UMBRELLAS .........................D03/5+
  VENDING MACHINES ..................D20/1+
  WEAVING ...........................D05/47+

DESILVERIZING LEAD .................. 75/697+


DESIZING ............................ 8/138
  DYEING COMBINED ...................8