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:


COLLAGE
  REPRESENTATIVE OF REAL OBJECT .....428/39

COLLAGEN ............................ 530/356+

COLLAPSIBLE
  BED ...............................5/12.1+
  CAN (BEVERAGE) ....................224/906*
  CORE BAR ..........................164/400
  PAPERBOARD BOX ....................229/117.1+
  RECEPTACLE ........................222/92+
  SIGN ..............................40/610
  STEERING POST .....................280/777
  TOY ...............................446/487+
     BUILDING .......................446/478
  TUBE ..............................138/119
  WALL
     RECEPTACLE .....................222/92
  WEIGHER ...........................177/126
  WORK HOLDER .......................269/901*


COLLAR
  AND TETHER - ANIMAL SECURING ......119/792+
  ANIMAL ............................119/858+
     DESIGN .........................D30/152
  APPAREL ...........................2/129+
     COAT ...........................2/98+
     DESIGN .........................D02/602+
     DESIGN, FUR ....................D02/601
     IRONING ........................223/52.1+
     MAKING .........................223/2+
     MAKING, X-ART ..................83/901*
     PROTECTORS .....................2/60
     RECEPTACLE FLEXIBLE ............206/278+
     SHIRT ATTACHED .................2/116
     WEAVING ........................139/385.5
  BUTTONERS .........................24/40
  BUTTONS ...........................24/101.R+
  HORSE .............................54/19.1+
     DESIGN .........................D30/137
     HAME COMBINED ..................54/18.1+
     SHAPING ........................69/3
     STUFFING .......................69/4
  LAMP SHADE SUPPORT ................362/443
  PULLER ............................29/700+
  ROD COLLAR JOINT ..................403/230+
  STOVEPIPE .........................126/315
  SUPPORTS ..........................2/132

COLLATORS ........................... 270/52+
  WITH FEEDING ......................271/287

COLLECTING MECHANISM (SEE DEVICE WITH
 WHICH COMBINED)
  CARBON BLACK ......................422/150+

COLLECTION RECEPTACLE AND CHAMBER ... 232
  ABRADING DEVICE ...................51/270
  EARTH BORING COMBINED .............175
  RAILWAY PASSENGER CAR DUST GUARD ..105/352
  STOVE ASHPAN ......................126/242+
  STREET SWEEPING MACHINE ...........15/83+
  WIPING DAUBING POLISHING IMPLEMENT 15/221


COLLECTOR
  ELECTRIC
     IN ARC LAMP ....................314/129
     RING ...........................310/232
     TO MOVING OBJECT ...............191
     VEHICLE TRANSMISSION ...........191/45.R+
  ROOF SHINGLES OR TILES ............126/622

COLLET
  CHUCK .............................279/46.1+
     SPLIT SOCKET ...................279/43.1+
  HOROLOGICAL HAIR SPRING ...........368/177
  INSERTION / REMOVAL TOOL ..........29/213.1

COLLIMATOR
  IMAGE PROJECTOR HAVING ............353/102
  LIGHT BEAM PROJECTOR HAVING .......362/257+
     FACETED REFLECTOR ..............362/297+
  OPTICAL SYSTEM ....................356/138+
  SIGNAL REFLECTOR HAVING ...........359/529+
  TESTING DEVICE HAVING .............356/153

COLLISIONS SEE PROTECTION
  AVOIDANCE .........................367/909*
     AIRCRAFT SYSTEMS ...............342/29
     SHIP SYSTEMS ...................342/41

COLLOCATING GAUGE ................... 33/613+

COLLODION ........................... 106/169+

COLLOIDS ............................ 252/302+
  RADIOACTIVE .......................252/634+


COLOGNE ............................. D28/5

COLOPHONY SEE ROSIN

COLOR & COLORING (SEE DYEING;PIGMENT)
  APPLICATION TRAINING ..............434/81+
  ASSORTING BY ......................209/580
  CHARTS
     COLOR DISPLAY ..................434/98+
     UNKNOWN COLOR TEST .............356/421+
  ELECTROPHOTOGRAPHIC COPIER ........355/326.R+
  FILTER ............................359/885+
     PHOTOGRAPHIC CHEMICALLY DEFINED 430/6+
  FLOWERS BY ABSORPTION OF DYE ......427/4
  FOOD ..............................426/540+
     PRESERVING OR MODIFYING COLOR ..426/262
  FRESH FLOWERS .....................47/58
  GLASS HEAT DEVELOPED ..............65/111+
  LANTERNS ..........................362/166+
     SIGNAL .........................362/168
  LUMINOUS, INORGANIC ...............252/301.6R+
  LUMINOUS, ORGANIC .................252/301.16
  MINERAL OIL .......................208/12
  MUSICAL INSTRUMENT ACCESSORY ......84/464.R
  PAPER .............................8
  PHOTOGRAPHY SEE PHOTOGRAPHY .......430/357+
     SEPARATION RECORD MAKING .......430/356
  SEAMS .............................112/17

COLORIMETER ......................... 356/402+
  CHEMICAL ANALYSIS, APPARATUS ......422/82.9
  PHOTOELECTRIC .....................250/226
  VISUAL OR PHOTOELECTRIC ...........356/402+
     WITH COMPUTER ..................364/526
     WITH LIGHT CONDUCTOR ...........250/227.23

COLORIMETRIC RADIATION DOSIMETER .... 250/474.1


COLOSTOMY
  BAGS ..............................604/338+
  RECEPTACLE ENGAGING STOMA .........604/332+

COLTER .............................. 172
  BEARINGS ..........................384/157
  PLOW COMBINED .....................172/165+
  ROLLING ...........................172/518+

COLUMN (SEE MAST; POLE; POST) ....... 52/720+
  AERATED COLUMN PUMP ...............417/108+
  DESIGN ............................D25/126+
  FRACTIONATING .....................261/75+
     COMBINED .......................202/158+
     MINERAL OIL ....................196/139
     STILL COMBINED .................202/153+
  MAKING ............................29/897.33
  STATIC MOLD .......................249/48


COMB AND COMBING .................... D28/21+
  CLEANER
     BRUSH MACHINE ..................15/39
     COMB COMBINED ..................132/119
     IMPLEMENT ......................15/104.5+
  CORNSTALK HUSKERS .................56/114+
  COTTON HARVESTER ..................56/34+
  CURRY .............................119/86+
     DESIGN .........................D30/159
  FIBER LIBERATING ..................19/29
  FIBER WORKING .....................19/115.R+
  GRIDS COMBINED ....................15/142
  HAIR ..............................132/219+
     DESIGN .........................D28/21
  HAT FASTENERS .....................132/61
  HONEY FOUNDATION ..................449/44+
  HONEY FRAMES ......................449/42+
  KITS TOILET .......................132/121
  LEATHER MANUFACTURES ..............69/27
  MAKING WIRE .......................140/100
  MAKING WOOD .......................144/26
  MAKING, X-ART .....................83/908*
  MAKING, X-ART .....................425/805*
  MUSIC .............................84/94.1+
  SCISSORS COMBINED .................7/136+
  SEED GATHERERS ....................56/127+
  SURGICAL ..........................607/79
  TEXTILE
     FIBER PREPARATION ..............19/115.R+
     THREAD FINISHING ...............28/222+
     WARP PREPARING .................28/212+

COMBER BOARD ........................ 139/86

COMBINATIONAL CODE
  CONVERSION, FOR PUNCHING ..........234/69+
  PUNCHING, SELECTIVE ...............234


COMBUSTION (SEE THERMAL) ............ 431
  ATTENUATING SOUND .................431/114
  BURNER CONTROL ....................431/18+
  CHAMBER ...........................431/350+
     EXHAUST PUMP ...................431/157
     FLUID FUEL BURNER ..............431/308+
     FLUID FUEL BURNER ..............431/350+
     OUTLET FORMS JET NOZZLE ........431/158
     PRE-CHAMBER ....................123/253+
  CONTROL OF NITROUS OXIDES .........60/900*
  EARTH BORING BY ...................175/12
  EARTH IN SITU .....................166/256
  ENGINE ............................123
     EXHAUST TREATMENT ..............60/272+
       COMBUSTION PRODUCTS WITH .....60/39.5+
     FLUID INJECTOR .................239/584+
     FLUID MOTOR COMBINED ...........60/616+
       FREE PISTON DEVICE ...........60/596
       VACUUM GENERATED .............60/397
       WASTE HEAT DRIVEN MOTOR ......60/597+
     PUMP DRIVE .....................417/364
     PUMP REGULATOR .................417/34
     REACTION MOTOR .................60/200.1+
     REACTION MOTOR WITH AIRCRAFT ...244/74
     ROTARY PISTON ..................123/200+
     TEMPERATURE MEASUREMENT ........374/144+
     TURBINE COMBINED ...............60/598+
     TURBINE COMBINED, PRODUCT ......60/39.34+
  FAILURE RESPONSIVE FUEL SAFETY
     CUTOFF .........................137/65+
  FUMIGANT ..........................424/40+
  IMPROVER FOR SOLID FUEL ...........44/641
  PROCESSES .........................431/2+
  PRODUCT
     EXHAUST TREATMENT ..............60/272+
     FIRE EXTINGUISHING AGENT .......169/12
     GENERATOR ......................60/722+
     POWER PLANT ....................60/39.1+
  PULSATING .........................431/1
  PUMP ..............................417/73+
  TUBE

COMFORTERS .......................... 5/502+
  BEDDING ...........................D06/596


COMMINUTING ......................... 241
  LIQUID METAL ......................75/331+
  REFRIGERATION COMBINED ............62/320
  REFUSE TREATMENT MEANS ............110/222
  ROCK IN SITU ......................299
  SHREDDING METAL ...................29/4.51+
  SHREDDING METAL AND SINTERING .....419/33
  STRAINER COMBINED .................210/173+
     COMBINED .......................201/7+
  TOBACCO ...........................131/311+
     FEEDING COMBINED ...............131/109.1
  VEGETABLES AND MEAT ...............241

COMMINUTOR ELEMENT .................. 241/293+
  WITH COOPERATING SURFACE ..........241/261.1

COMMODE
  DRY CLOSET ........................4/449+

COMMUNICATION EQUIPMENT SEE TYPE
 OF EQUIPMENT DESIRED
  AIDS FOR HANDICAPPED ..............434/112+


COMMUNICATIONS
  DEMODULATORS ......................329
  ELECTRICAL ........................340
     ALARMS .........................340/500+
     AUDIBLE, EG SIMULATED NOISE IN  340/384.R+
       TRAINERS .....................340/384.R+
     CHARACTER RECOGNITION SYSTEMS ..382
     CODE CONVERTERS ................341
     CODE TRANSMITTERS ..............341/173+
       OPERATOR CONTROLLED ..........341/20+
     COMPRESSIONAL WAVE .............367
     CONTINUOUSLY VARIABLE340/870.1+
       INDICATING, EG TELEMETERING ..340/870.1+
     DIGITAL COMPARATOR SYSTEMS .....340/146.2+
     ECHO SYSTEMS ...................367/87+
     ELEVATOR .......................187/130+
     ERROR CHECKING SYSTEMS .........371
     IMAGE ANALYSIS .................382
     SELECTIVE, EG REMOTE CONTROL ...340/825+
       IN WELL BORE .................340/853.3+
     SIGNALS, VISUAL ................340/815.1+
     TACTUAL SIGNALS ................340/407
     TRAFFIC CONTROL SIGNAL .........340/907+
     UNDERWATER .....................367/131+
     VEHICLE MOUNTED SIGNAL .........340/425.5+
     WELL BORE, COMPRESSIONAL WAVE ..367/81+
     WELL BORE, ELECTRICAL ..........340/853.1+
  LIGHT WAVE ........................359/109+
  MODULATED CARRIER WAVE  455
     COMMUNICATIONS SYSTEMS .........455
  MODULATORS ........................332
  MULTIPLEXING ......................370
  NON-ELECTRIC MISCELLANEOUS ........116
  PULSE OR DIGITAL ..................375
  RADIO .............................455
  RECORDERS .........................346
     RECORDING REGISTERS &235
       CALCULATORS ..................235
     SOUND RECORDERS ................369
  TELECOMMUNICATIONS ................455
  TELEGRAPHIC CARRIER WAVE ..........375
  TELEGRAPHY ........................178
  TELEPHONY .........................379
  TELEVISION, FACSIMILE .............358

COMMUTATION BOOK AND TICKET ......... 283/26


COMMUTATOR
  BARS ..............................310/233+
  BRUSHES ...........................310/248+
     HOLDERS ........................310/239
  FLANGING TUBE TO HOLD SEGMENTS ....29/243.517+
  GRINDERS ..........................51/244
  MAKING ............................29/597
     ASSEMBLING APPARATUS ...........29/732+
  STRUCTURE .........................310/233+
  TURNING PORTABLE LATHE ............82/128
  TYPE MOTORS
     ALTERNATING CURRENT ............310/173+
     UNIVERSAL ......................310/158

COMPACTING (SEE JARRING)
  AGITATING .........................366
  BEVERAGE INFUSER COMBINED .........99/287
  BURNISHING ........................29/90.1+
  COOKING APPARATUS COMBINED ........99/349+
  EARTH BORING BY ...................175/19+
  FOUNDRY MOLD SAND .................164/37+
  GLASS MANUFACTURING ...............65/111+
  LEATHER HAMMERING .................69/1
  MACHINERY DESIGN ..................D15/20
  METALS ............................419/61
     WITH SINTERING .................419
  NUCLEAR FUEL ......................264
  PIPE MAKING COMBINED ..............425/110+
  PIPE MAKING COMBINED ..............425/262
  POWDER METALLURGY .................419/38
     SLIP OR SLURRY .................419/40
  PRESSES AND PRESSING ..............10
     FOUNDRY MOLD MATERIAL ..........164/207+
  RECEPTACLE FILLING COMBINED .......141/71+
     BAG ............................53/523+
  REFUSE TREATMENT MEANS ............110/223
  TEXTILE THREAD ....................26/18.6
  TRASH BUNDLE ......................428/2

COMPACTOR ........................... D15/20

COMPACTS ............................ 132/293+
  ABSENT SPECIAL TOILET ARTICLE .....401/126+
  DESIGN ............................D28/78
  ILLUMINATED .......................362/135+


COMPANDER ........................... 333/14
  COMPRESSOR AMPLIFIER
     THRU BIAS CONTROL ..............330/129+
     THRU IMPEDANCE CONTROL .........330/144+
     THRU THERMAL IMPEDANCE CONTROL .330/143
  EXPANDER AMPLIFIER
     THRU BIAS CONTROL ..............330/129+
     THRU IMPEDANCE CONTROL .........330/144+
     THRU THERMAL IMPEDANCE CONTROL .330/143
  IN ELECTRICAL RECORDING OR         369/174
     REPRODUCING ....................369/174

COMPARATORS
  CONFIGURATION .....................356/388+
  MICROSCOPE SUBCOMBINATION .........359/368+
  OPTICAL ...........................356
  PROJECTION TYPE ...................356/391+


COMPARTMENT
  AIRCRAFT
     FREIGHT ........................244/118.1+
     PASSENGER ......................244/118.5+
     SAFETY LOWERING DEVICE .........244/140+
  BED ELEMENT .......................5/308
  BOILER ............................122/37+
  BUILDING ..........................52/234+
  CIGAR CIGARETTE SMOKING DEVICE
     HOLDER .........................131/242
  LAND VEHICLE BODIES ...............296/24.1+
     LUGGAGE ........................296/37.1+
  MARINE ............................114/78
  MOTORMANS .........................105/342
  PILLOW ............................5/645
  RECEPTACLE
     APPAREL POCKET .................2/253
     BAG, FLEXIBLE ..................383/38
     BAG, MULTIPLE POCKET ...........383/38+
     BAGGAGE CONVERTIBLE TO
       FURNITURE TYPE BUREAU ........190/3+
     BARREL .........................217/75
     BEVERAGE INFUSER ...............99/316+
     BOTTLES AND JARS ...............215/6
     CABINET ........................312
     COLLAPSIBLE ....................222/94
     COVER FOR BARREL ...............217/82
     DISPENSER ......................222/129+
     DRYING APPARATUS ROTARY DRUM ...34/109
     ENVELOPE .......................229/72
     FIRE EXTINGUISHERS .............169/71+
     HOUSE TYPE LETTER BOX ..........232/21
     ICE IN WOODEN RECEPTACLE .......217/130
     KILNS AND DRIERS ...............34/209+
     LETTER BOX .....................232/24+
     MATERIAL HOLDER FOR HEATING ....432/213+
     MEDICATION CONTAINING ..........604/403+
     METALLIC .......................220/500+
     NESTED DRUM DRIERS .............34/128
     OIL VAPORIZER ..................196/111
     PAPERBOARD BOX .................229/120.2+
     PITCHER ........................222/129+
     PURSE ..........................150/112+
     SHOWCASE .......................312/117+
     SIFTER .........................209/373
     SLIDING TRAY TYPE PAPER BOX ....229/10
     SPACED WALL OR JACKET ..........220/445+
     SPECIAL RECEPTACLES ............206
     TRAVELING BAGS .................190/109+
     TYPE CASES .....................276/44+
     WASHING MACHINE TUMBLING DRUM ..68/139+
     WOODEN BOX .....................217/7+
  SAFES .............................109/53+
     MOVABLE ........................109/45+
  SECRET CABINET WITH ...............312/204
  SOFA BED ELEMENT ..................5/58
  TUB ...............................4/514
     BATHING ........................4/539
     WASH ...........................4/639+
  WATER CLOSET FLUSH TANK ...........4/363+

COMPASS
  COURSE RECORDER ...................346/8
  DESIGN ............................D19/38
  DIVIDER ...........................33/558.1+
  GYROMAGNETIC ......................33/316+
  GYROSCOPIC ........................33/324+
  MAGNETIC ..........................33/355.R+
  REPEATER STATIONS COMBINED ........340/870.15+
  SAWS ..............................83/835+
  SCRIBER ...........................33/27.2
     BEAM TYPE ......................33/27.3
  SCRIBER COMPOUND ..................33/26

COMPENSATING
  ABRADING TOOL WEAR ................51/155
  ALTERNATING CURRENT PHASE .........323/212
  BACKLASH ..........................409/146
     GEAR CUTTER ....................409/5
  BRAKE WEAR ........................188/214+
  CLOCK AND WATCH BALANCES ..........368/171
     REGULATING .....................368/170
  CLOCK PENDULUMS ...................368/182
  CLUTCH ............................192/110.R
  COMPASS MAGNETIC ..................33/356+
  CONDUCTOR ELECTRIC ................174/12.R+
  FLOW METER ........................73/254
  FLUID PRESSURE ....................138/26+
  GEARING ...........................475/220+
     GEARLESS DIFFERENTIAL ..........74/650
  GUN SIGHT .........................33/237
  INTERNAL COMBUSTION ENGINE ........123/192.1
  LAMP ELECTRIC .....................314/13+
  MUSICAL INSTRUMENT WINDING ........84/131
  PUMP PRESSURE .....................417/540+
  RAILWAY SWITCH INTERLOCKING .......246/152+
  THERMOMETER .......................374/197
     FOR THERMOCOUPLE CIRCUIT        374/181
       REFERENCE JUNCTION ...........374/181
  TRANSMISSION ELECTRIC .............333/18
  VALVE .............................137/625.34+
  VEHICLE ...........................180/76
  VEHICLE STEERING ..................180/6.24+
  WEIGHING SCALE TEMPERATURE ........177/226+


COMPENSATOR
  EXPANSION OR CONTRACTION
     STATIC MOLD ....................249/82

COMPLIANCE DEVICE ................... 33/832
  ROBOT .............................901/45*

COMPOSING
  TYPESETTING .......................276
     STICKS .........................276/38+

COMPOSITE ARTICLE SEE LAMINATE
  ALL METAL OR WITH ADJACENT METALS .428/615+
  MAKING BY POWDER METALLURGY .......419/5
  MAKING CORE AND WINDING ...........242/7.1
  MULTIPART ARTICLE SHAPING .........264/45.1+
  STATIC MOLD FOR MAKING ............249/83+


COMPOSITION (SEE TYPE) .............. 252
  ABRASIVE ..........................51/293+
  ABSCISSION ........................504/162+
  ABSORBENT .........................502/400+
  ALGICIDES .........................504/150+
  ALLOY .............................420
  ANTAGONIST ........................504/103+
  ANTIBIOTIC MIXTURE ................424/114
  ANTIDOTE ..........................504/103+
  ANTIFOG ...........................106/287.1+
  ANTIHEMORRHAGIC ...................424
  AQUATIC PLANT DESTRUCTION .........504/150+
  ASPHALT, TAR, PITCH ...............106
     MINERAL OIL ONLY ...............208/22
  BIOCIDAL ..........................424
     COATING OR PLASTIC COMBINED ....106/15.5+
     MINERAL OIL ONLY ...............208/2
  CANDLES ...........................44/275
  CATALYTIC .........................502/100+
  CERAMIC ...........................501/1+
  CHEMILUMINISCENT ..................252/700
     COMBINED LIGHT SOURCE ..........362/34
  COATING ...........................106
     MATCH SPLINT ...................149/3+
     METAL BASE REACTIVE ............148/240+
     MOLD ...........................106/38.22+
  COLLOIDAL .........................252/302+
  CORE
     METAL CASTING ..................106/38.2+
     PLASTIC MOLDING ................106/38.2+
  CRAYONS ...........................106/19.R+
  CROSSLINKING ......................252/182.11+
  CURING ............................252/182.11+
  DEFOLIANT .........................504/162+
  DESICCANT .........................504/162+
  DESUCKERING .......................504/184+
  DETERGENT .........................252/89.1+
  DIAGNOSTIC BIOLOGICAL .............424/2+
  DIELECTRIC FLUID ..................252/570+
     HYDROCARBON ....................585/6.3+
  DISTILLING APPARATUS ..............202/267.1
  DWARFING ..........................504/174+
  DYE ...............................8
  ELECTRIC INSULATION FLUID .........252/570+
     HYDROCARBON ....................585/6.3
  ELECTRICALLY CONDUCTIVE ...........252/500+
  ELECTRODE (SEE ELECTRODES)
  ELECTROLYTE .......................205
     BATTERY ........................429/188+
     CONDENSER OR RECTIFIER .........252/62.2
  ELECTRON EMISSIVE .................252/500+
  EMBALMING .........................424/75
  EMULSIFYING .......................252/351+
  EXPLOSIVE .........................149
  FERTILIZER ........................71
  FIRE EXTINGUISHING ................252/2+
  FLUX ..............................148/23+
  FOOD AND BEVERAGE .................99
  FRICTION FOR MATCHES ..............149
  FUEL ..............................44
     GASEOUS ........................48/197.R+
     JET ............................149/1
     MINERAL OIL ONLY ...............208/15+
  GROWTH REGULATING FOR PLANTS ......504/116+
  HARDENING .........................252/182.11+
  HAZARDOUS WASTE CONTAINMENT .......588
  HERBICIDES ........................504/116+
  HIGH BOILING ......................252/71
  HUMIDISTATIC ......................252/194
  HYDROCARBON .......................585/1+
  INORGANIC MATERIALS ONLY ..........106/286.1
  INSULATORS
     FLUENT ELECTRIC ................252/570+
  INTERACTIVE .......................252/183.11+
  LIGHT TRANSMISSION MODIFYING ......252/582
  LOW POUR POINT ....................252/71
  LUBRICANT .........................252/9+
     MINERAL OIL ONLY ...............208/18+
  LUMINOUS, INORGANIC ...............252/301.6R+
  LUMINOUS, ORGANIC .................252/301.16
  MANTLE ............................252/492
  MATCH .............................149
  MEDICINAL .........................424
  MOLD FORMING ......................106/38.2+
  MOLTEN METAL TREATMENT ............75/303+
  MONOMERS ..........................252/182.11+
  NON-INTERACTIVE ...................252/182.11+
  OPTICAL FILTER ....................252/582+
  PHOTO CONDUCTIVE ..................430/56+
  PHOTOGRAPHIC
     DEVELOPING .....................430/464+
     SENSITIZING ....................430/570+
     SENSITIZING AND DEVELOPING .....430/486+
  PLASTIC ...........................106
     MINERAL OIL ONLY ...............208/22+
  POLYMER PRECURSORS ................252/182.11+
  PYROTECHNIC .......................149/37+
  RADIOACTIVE .......................252/625
     MEDICINAL ......................424/1.1
     PRODUCTION .....................376/171
  ROLLER ............................492
  RUBBER CONTAINING (SEE SYNTHETIC
     RESIN OR NATURAL RUBBER)
  SAFENER ...........................504/103+
  SOIL LIFE EXTENDER ................504/113
  STUNTING ..........................504/174+
  TANNING ...........................8/94.19R+
  TEXTILE TREATING ..................252/8.6+
  THERMOELECTRIC ....................136/236.1+
  TOXIC WASTE CONTAINMENT ...........588
  UNDERTAKING .......................424/75
  UTILIZING WAVE ENERGY .............522/71+
  VULCANIZING .......................252/182.11+
  WATER SOFTENING ...................252/175+
  WAX ...............................106
     MINERAL OIL ONLY ...............208/20+
  WELDING FLUX ......................148/23+
  WICK ..............................502/400
  X-RAY CONTRAST ....................424/4

COMPOUND (SEE TYPE)
  CASTING METAL .....................164/91
     ELECTROLYTIC PRODUCTION OF .....204/59.R+
  HYDROCARBON .......................585/16+
  LUMBER ............................52/782+
     MAIL RECEIVING .................52/364+
  METALLIC STOCK ....................428/615+
  ORGANIC ...........................260
     ELECTROLYTIC PRODUCTION OF .....204/72+
     ELECTROMAGNETIC PRODUCTION OF ..204/157.15+
     ELECTROSTATIC OR ELECTRIC
       DISCHARGE PRODUCTION OF ......204/165+
     FERMENTATIVE PRODUCTION OF .....435
     MINERAL OILS ...................208
     SUGAR AND STARCH ...............127
  REFRIGERATION .....................62/332+
     AUTOMATIC ......................62/175
  STEAM ENGINES .....................91/152+
  TEMPERATURE SENSING MEMBER ........428/616
     IN THERMOMETER .................374/205+
  TOOLS .............................7

COMPRESSED AIR SEE PNEUMATIC AND
 FLUID OPERATED
  VEHICLE BRAKES ....................303


COMPRESSING APPARATUS SEE COMPRESSOR, 417
 MOLDING, PRESSING, SHAPING .........417
  BARREL ............................147/4+
  HARVESTERS
     BINDING COMBINED ...............56/432+
     SHOCKER COMBINED ...............56/430
  HAZARDOUS OR TOXIC WASTE588
     CONTAINMENT ....................588
  REFRIGERATION .....................62/498+
     AUTOMATIC ......................62/190+
  RIMS ..............................157/2
  SEAMS
     DIE ............................413/31+
     FOLDING COMBINED ...............413/27+
     ROLLER .........................413/31+
     TUBE SIDE SEAM .................72/48+
  SNOW ..............................37/225+
  TOBACCO PLUG MAKING ...............131/111+

COMPRESSION MEMBER (SEE COLUMN)
  SPRING ............................267/70+

COMPRESSIONAL WAVE
  GENERATORS ........................116/137.R
  SUBMARINE SIGNAL ..................367/131+

COMPRESSOR
  BODY
     BRASSIERE
     BRASSIERE DESIGN ...............D02/706+
     BRASSIERE OR CHEST BANDAGE .....450/1+
     CORSET OR GIRDLE ...............450/94+
     CORSET OR GIRDLE DESIGN ........D02/702+
     FOR UPPER LEG OR THIGH .........450/101
  DESIGN OF MACHINE .................D15/7+
  GAS PUMPS .........................417
  REFRIGERATOR COMPRESSOR MUFFLER ...181/403*
  TUBE PINCHING VALVE ...............137/384.2+

COMPTOMETER ......................... 235/82.C


COMPUTER
  APPLICATIONS & SYSTEMS ............364/400+
  ARTIFICIAL INTELLIGENCE SEE
     ARTIFICIAL INTELLIGENCE
  AUTOMATIC CONTROL OF RECORDER      360/69+
     MECHANISM ......................360/69+
  CAMERA PHOTOGRAPHIC OPERATION .....354/412
  CASSETTE ..........................360/131+
  CASSETTE OR CARTRIDGE HOLDER ......206/387
  CHARACTER RECOGNITION .............382
  CODED DOCUMENT SORTING ............209/547+
  COMPUTERIZED SWITCHING IN TELEPHONE379/284
     SYSTEMS ........................379/284
  CONTROLLED DISPLAY ................395/118+
     ANIMATION ......................395/152
     TEXT/DOCUMENT ..................395/144+
     THREE DIMENSIONAL ..............395/119+
  CONVERTING ANALOG SIGNAL TO        360/32
     DIGITAL ........................360/32
  DATA PROCESSING EQUIPMENT .........D14/100+
  DISC ..............................360/135
  DRUM ..............................360/136
  DYNAMIC MAGNETIC INFORMATION       360
     STORAGE OR RETRIEVAL ...........360
  ELECTRICAL ........................395
     ALLOCATION OF RESOURCES TO      395/650+
       PROCESSES ....................395/650+
     ANALOG .........................364/800+
     APPLICATIONS
       COMPUTATIONAL SYSTEMS ........364/400+
       MEASURING SYSTEM, ELECTRICAL .364/481+
       MEASURING SYSTEMS, PHYSICAL ..364/550+
     ARRAY PROCESSOR ................395/800
     ASSEMBLER ......................395/700
     BIOS ...........................395/700
     BOOTING ........................395/700
     BUFFERING OF INSTRUCTION .......395/375
     CALCULATORS
       ANALOG .......................364/800+
       DIGITAL ......................364/700+
     CHAINING .......................395/375
     COMPATIBILITY BETWEEN395/500
       COMPONENTS ...................395/500
     COMPILER .......................395/700
     CONTROL SYSTEMS ................364/130+
     DATABASE MANAGEMENT SYSTEMS ....395/600
     DATABASE MANAGEMENT TECHNIQUES .395/600
     DATABASE STRUCTURES ............395/600
     DECODING OF INSTRUCTION ........395/375
     DIAGNOSTIC TESTING .............395/575
     DISASSEMBLER ...................395/700
     EMULATION OF COMPONENTS ........395/500
     FETCHING OF INSTRUCTIONS .......395/375
     FILE LOCATING AND RETRIEVAL     395/600
       TECHNIQUES ...................395/600
     FILE MAINTENANCE OPERATIONS ....395/600
     FILE MANAGEMENT SYSTEM .........395/600
     HYBRID TYPE ....................364/600+
     HYPERCUBE ......................395/800
     INITIALIZATION .................395/700
     INSTRUCTION PROCESSING .........395/375
     KERNEL .........................395/700
     LOAD VALENCING .................395/650
     MULTIPLE INSTRUCTION, MULTIPLE  395/800
       DATA (MIMD) ..................395/800
     MULTIPLE INSTRUCTION, SINGLE    395/800
       DATA (MISD) ..................395/800
     MULTI-PROGRAMMING ..............395/650
     MULTI-TASKING ..................395/650
     PIPELINING .....................395/375
     PREFETCHING OF INSTRUCTIONS ....395/375
     PROCESSING ARCHITECTURE ........395/800
     PROCESSING (TASK) MANAGEMENT ...395/650
     PYRAMID ........................395/800
     RELIABILITY ....................395/575
     SIMULATION OF COMPONENTS .......395/500
     SINGLE INSTRUCTION, MULTIPLE
       DATA (SIMD) ..................395/800
     SINGLE INSTRUCTION, SINGLE
       DATA (SISD) ..................395/800
     SYNCHRONIZATION OF PROCESSES ...395/650
     SYSTEM UTILITIES ...............395/700
     SYSTEMS CONTROLLED BY DATA
       BEARING RECORDS ..............235/375+
     TASK SCHEDULING ................395/650
     TRANSMISSION OF INFORMATION
       AMONG MULTIPLE COMPUTER
       SYSTEMS ......................395/200
     VECTOR PROCESSOR ...............395/800
  EQUIPMENT .........................D14/100+
  ERROR CHECKING SYSTEM IN COMPUTER .371
  GENERAL PROCESSING OF DIGITAL
     SIGNAL .........................360/39+
  GENERAL PROCESSING OF TV SIGNAL ...360/33.1+
  GENERAL RECORDING OR REPRODUCING ..360/55+
  GEOPHYSICAL SYSTEM WITH DIGITAL
     COMPUTER .......................367/60
  GRAPHICS ..........................395/100+
  HEAD ..............................360/110+
     MOUNTING .......................360/104+
     TRANSPORT ......................360/101+
  HOLDER FOR MAGNETIC DISC ASSEMBLY .206/444
  HOUSING AND MOUNTING ASSEMBLIES ...361/683+
  KNOWLEDGE PROCESSING SEE ARTIFICIAL
     INTELLIGENCE
  MEMORY SYSTEM SUBCOMBINATIONS .....365
  MODULATING & DEMODULATING .........360/29+
  MONITORING OR TESTING PROGRESS OF  360/31
     RECORDING ......................360/31
  NON-ELECTRICAL ....................235
     FLUIDIC ........................235/200.R
     MECHANICAL .....................235/61.R
       RECORD CONTROLLED ............235/419
  OPERATOR INTERFACE DISPLAY ........395/155+
     ICON ...........................395/159
     MENU ...........................395/156
     WINDOW .........................395/157+
  ORDNANCE ..........................235/400+
  RADAR SYSTEM COMBINED .............342/195
  RECORD CONTROLLED, ELECTRONIC .....235/375+
  RECORD COPYING ....................360/15+
  RECORD EDITING ....................360/13+
  RECORD MEDIUM .....................360/131+
  RECORD TRANSPORT ..................360/81+
  RESTRICTIVE ACCESS OVER TELEPHONE  379/95
     LINE ...........................379/95
  SIGNAL SPLITTING ..................360/22
  SPECIAL PURPOSE TELEVISION SYSTEM  358/93
     APPLICATION ....................358/93+
  STATIC PRESENTATION ...............395/101+
  TAPE ..............................360/134
  TEACHING COMPUTER SCIENCE .........434/118
  TV APPLICATION ....................358/903*

COMPUTING
  DISTANCE ROLLING CONTACT ..........33/733
  NUCLEAR REACTION CONTROL ..........376/217
  REGISTERS .........................235
  SCALES ............................177/25.11+
     WEIGHING .......................177/25.11+
  SOLAR .............................33/268
  TAPE LENGTH .......................33/763
  WORKMENS LABOR AND WAGE RECORDER ..346

CONCEALED DATA
  PRINTED MATTER ....................283/72+

CONCEALMENT (SEE CAMOUFLAGE)
  WARSHIP ...........................114/15


CONCENTRATING
  BEVERAGE ..........................426/425+
  CATHODE RAY BEAMS .................313/441+
  EVAPORATORS .......................159
  IONIZED GAS FOR THERMO NUCLEAR
     REACTION .......................376/100
  LIQUIDS IN LIQUIDS
     APPARATUS ......................422/256+
     PROCESSES ......................23/306+
  MILK ..............................426/587+
  ORES ..............................423/1+
  ORES ..............................209
     RARE ELEMENT, INORGANIC ........423
     SEPARATING SOLIDS ..............209
  RUBBER
     NATURAL ........................528/937*
     SYNTHETIC OR NATURAL ...........523/335
  SUGAR CRYSTALLIZATION COMBINED ....127/16

CONCENTRIC TUBE OR CYLINDER
  BURNER GAS ........................431/195+
  ELECTRIC CABLE FLEXIBLE ...........174/102.R+
     FLUID VACUUM OR AIR ............174/28+
     WITH INSULATION SPACER .........174/99.R+
  EXPANSIBLE CHAMBER DEVICE .........92/51+
  FLUE ..............................122/160+
  HEADER WATER TUBE .................122/362
  HEAT EXCHANGER ....................165/154+
  PIPE JOINT ........................285/133.1+
  PIPE JOINT FLEXIBLE PIPE ..........285/149
  TRANSMISSION LINE .................174/103+
     INVOLVING LINE PARAMETERS ......333/236+
     WITH NONSOLID INSULATION .......174/28+

CONCERTINA .......................... 84/375
  KEYBOARD TYPE .....................84/376.R