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:


SWAB ................................ 15/208+
  CONTAINER FOR .....................206/209
  CULTURE MEDIUM COMBINED ...........435/292+
  DIAGNOSTIC ........................128/759
  LUBRICATOR ........................184/102
  MAKING ............................19/145+
  MEDICATED .........................604/1+
  SAMPLING ..........................73/854
  VALVED PUMP PISTON ................417/545+

SWAGING
  BOLT SIDE .........................470/147
  CHAIN MAKING SHAPING AND ..........59/30
  FILE CUTTING BY ...................76/14
  HORSESHOE NAIL SIDE ...............470/119
  HORSESHOE SHAPING AND .............59/58
  METAL FORGING .....................72
  NUT FORGING SIDE ..................470/93
  PIPE JOINT ........................285/382
  PIPE TO PLATE JOINT ...............285/222
  SAW MAKING ........................76/51+
  SAW SETTING .......................76/72
  SCREW THREADING BY ................470/84+
  TOOL SHARPENING BY ................76/89.2

SWARM APPLIANCES .................... 449/27+

SWASH PLATES ........................ 74/60
  EXPANSIBLE CHAMBER DEVICE .........92/71
  FLOW METER ........................73/244
  INTERNAL COMBUSTION ENGINE
     MULTIPLE PARALLEL CYLINDER .....123/58.R
     ROTATING CYLINDER ..............123/43.R
  MOTOR .............................91/472+
  PUMP ..............................417/269+

SWATHING ATTACHMENTS ................ 56/189

SWATTERS ............................ 43/137


SWEATER
  ANIMAL ............................D30/145
  APPAREL ...........................2/90
     DESIGN .........................D02/750+
  KNIT FABRIC .......................66/176

SWEATS OR SWEAT BAND ................ 2/181+
  HAT MAKING ........................223/22

SWEEP
  ANIMAL POWERED MOTOR ..............185/19+
  CABLE DRUM ACTUATION ..............254/381+
  CIRCUIT
     CATHODE RAY TUBE HAVING ........315/378
     ELECTRONIC TUBE TYPE OSCILLATOR 331
     TRIGGERED ......................328/193+
  CULTIVATOR SHOVELS ................172/681+
  CUTTER ............................30/310+
     CAN OPENER .....................30/435+
     PLURAL BLADE ...................30/310+
  FOUNDRY MOLD MAKING DEVICE ........164/161+
  PIVOTED ARM BENDING MACHINE .......72/217
  PLOW TRAILING
     SEPARATELY ATTACHED WINGS ......172/722+
     WINGED .........................172/730
  SHEET CUTTING MACHINE .............82
  WOOD AUGER ........................408/199+
  WOOD DISK CUTTING MACHINE .........408/72.R+

SWEEPER
  BRUSH BROOM VACUUM CARPET STREET ..15
  RAKE EG LAWN BROOM ................56/400.17+

SWEEPING COMPOUND ................... 252/88

SWEET POTATO MUSICAL INSTRUMENT ..... 84/380.R


SWEETENING
  MINERAL OIL .......................208/189+

SWELLING
  ARTIFICIAL FIBERS .................8/130.1+
     DYEING COMBINED ................8
  FIBER SWELLING & STRETCHING .......8/DIG.3

SWELLS
  ELECTRIC TONE GENERATION WITH      84/633
     EXPRESSION DEVICE ..............84/633
  PIANO .............................84/182
  PIPE ORGAN ........................84/346+
  REED ORGAN ........................84/372

SWIMMING
  AIDS ..............................441/55+
     BUOYANT ........................D21/237+
     FOOT ATTACHED ..................441/61+
     FOOT FLIPPER ...................441/64
  EXERCISING DEVICES ................482/55+
  MASK ..............................D29/8+
  POOL
     DESIGN .........................D25/2
     GRAB RAIL ......................D25/41
     INGROUND .......................52/169.7+
     NUCLEAR REACTOR ................376/174
     NUCLEAR REACTOR ................376/361
     NUCLEAR REACTOR ................376/403
     PORTABLE DESIGN ................D21/252
     SEA BATHS ......................4/487+
     TANK BATHS .....................4/488+
     WATER PURIFICATION .............210/169+
  SHOES .............................36/8.1
     WITH FINS ......................441/76+
  STRUCTURE OF POOL .................52/261
     CONCRETE .......................52/250
     CURVED .........................52/245
  SUIT ..............................D02/731+
  TEACHING ..........................434/254

SWINGING DOOR ....................... 49/381+


SWINGS
  AMUSEMENT DEVICE ..................472/118+
     DESIGN .........................D21/246
     ROUNDABOUT .....................472/33
  CHAIRS AND SEATS ..................297
     WITH FAN .......................416/146.R


SWITCH
  APPARATUS FOR ELEVATORS ...........187
  AUTOMATIC
     ELECTROMAGNETIC ................335/6+
     THERMAL ........................337/298+
  AUTOMATIC FOR ACETYLENE GENERATOR .48/7
  BATTERY ...........................320
  BOX ...............................220/3.2+
  BURGLAR ALARM .....................20/61.58R+
     SYSTEM .........................340/541+
  CHARGING FOR STORAGE BATTERIES ....320
  COMBINATION .......................20/1.R+
  CONVEYER TYPE
     CHUTE ..........................193/31.R
     ROLLERWAY ......................193/36
     SKIDWAY ........................193/39
     SPIRAL CHUTE ...................193/13
     ZIGZAG TUBE ....................193/28
  DOOR ACTUATED .....................20/61.62+
  ELECTRIC (SEE CONTROLLER) .........20
     ARC LAMP SYSTEM HAVING .........314/131
     ARC PREVENTING OR EXTINGUISHING 20/144.R+
     AUTOMOTIVE VEHICLE COMBINED     70/237
       WITH LOCK ....................70/237+
     BOX OR HOUSING .................174/53+
     CHECK OPERATED .................194/211+
       COIN .........................194/239+
     COMBINED WITH DISTRIBUTION      307
       CIRCUIT ......................307
     DESIGN .........................D13/158+
     DISPLAY SYSTEM CONTROL .........345+
     DOOR OR WINDOW .................20/61.62+
     ELECTRIC ILLUMINATING FIXTURE ..362/394
     ELECTRIC LAMP HAVING ...........315/32
     ELECTROMAGNETIC SWITCHING       361/139+
       SYSTEMS ......................361/139+
     ELECTRONIC TUBE HAVING .........315/56
     ELECTROTHERMALLY ACTUATED ......337
     FIRE ACTUATED ..................337/298+
     LAMP OR ELECTRONIC TUBE SYSTEM  315/362
       HAVING .......................315/362
     LIGHT PROJECTOR COMBINED WITH ..362/253
     MAGNETICALLY OPERATED ..........335
     MAKING .........................29/622
     MECHANICALLY ACTUATED, GENERAL .20
     MULTIPLE FILAMENT LAMP HAVING ..315/64
     PLATE OR SOCKET LIGHTING .......362/95
     POSITION OR CONDITION362/802*
       RESPONSIVE ...................362/802*
     POST SUPPORTED ELECTRIC LIGHT   362/431
       COMBINED WITH ................362/431
     SUPPORTED ELECTRIC LIGHT        362/382+
       COMBINED WITH ................362/382+
     TELEGRAPH CIRCUIT MANIPULATOR ..178/75
     TELEPHONE ......................379/422+
     TELEPHONE CHECK OPERATED .......379/146+
     TELEPHONE SWITCHBOARD ..........379/319+
     TELEPHONE SYSTEM AUTOMATIC      335/108
       SELECTIVE ....................335/108+
     TESTING OF AUTOMATIC TELEPHONE  379/17
       TYPE .........................379/17
     THERMAL CONTROL OF ALARM .......340/593+
     THERMALLY ACTUATED .............335
     TROLLEY CONDUCTOR TYPE .........191/38
     TUNER WITH .....................334/47+
  ELECTRONIC ........................328/76
  HEAT CONTROLLED ...................337/298+
  INDUCTOR COMBINED WITH SWITCH .....336/105
     TO NEUTRALIZE CAPACITANCE ......307/134
  INTERFERENCE FROM ELIMINATION .....307/134+
  KNIFE .............................20
  LUMINOUS
     FACEPLATE ......................250/465.1
     HANDLE OR KEY ..................250/465.1
     PUSH BUTTON ....................250/465.1
  MOVABLE CARRIER OF TEXTILE BRAIDER 87/16
     WITH PATTERN MECHANISM .........87/16
  MOVABLE FOR CARRIER OF TEXTILE
     BRAIDING APPARATUS .............87/37+
  PHOTOELECTRICALLY CONTROLLED ......361/173+
  PLATES (SEE FACE, PLATES)
  PNEUMATIC DISPATCH SYSTEM .........406/181+
  RAILWAY ...........................246
     CABLE ..........................104/184
     CABLE SLOT TYPE ................104/195
     FOOT GUARD .....................238/380
     RAIL JOINT .....................238/165
     TRACK ..........................104/130+
     TROLLEY CONDUCTOR ..............191/38
  STANDS ............................246/393+
     AUTOMATIC FACE SETTING .........246/278+
     MANUAL OPERATION WITH SIGNAL
       ACTUATION ....................246/144+
     SIGNAL .........................246/476
  STOPLIGHT
     AUTO ...........................20/61.59
     HYDRAULIC ......................20/81.R+
  STORE SERVICE SYSTEM ..............186/19+
  THERMAL RESPONSIVE ................337/298+
     HEATED BY ELECTRIC CURRENT .....337/14+
  TILTING TRACK SECTION TYPE ........414/354+
     VEHICLE UNLOADING ..............414/357
  TRAVELLING CRANE SYSTEM ...........414/562
  VERTICAL AXIS FOR CUTTING AND
     CONVEYING HARVESTER ............56/170+


SWITCHBOARD
  ELECTRIC ..........................361/600+
  TELEPHONE .........................379/319+
     DIVIDED CENTRAL ................379/310+
     THROUGH RINGING ................379/256

SWITCHES
  MEMBRANE TYPE .....................20/512
  ROLAMITE ..........................20/503

SWITCHING SYSTEMS ................... 307
  LAMP SYSTEMS ......................315/313+
  RELAY SYSTEMS .....................361/160+
  SIGNALLING ........................340/286.1+
     SELECTIVE ......................340/825+
     TRANSMITTERS ...................341
  TELEGRAPH .........................178
  TELEPHONE .........................379/242
     AUTOMATIC ......................379/258+
     CALLING ........................379/350+
     CENTRAL ........................379/242+
     INTERCOMMUNICATING .............379/167+
     PARTY LINE .....................379/177+
     PLURAL EXCHANGES ...............379/219+
     SWITCHBOARD ....................379/310+


SWIVELS ............................. 403/164+
  BRACELETS .........................63/10
  CHAIN .............................59/95
     MAKING .........................59/9
  CHUTE HORIZONTAL SWINGING .........193/22
  ENDLESS CHAIN PUMPS ...............198/643
  FISH BAIT ARTIFICIAL ..............43/42+
  FISHHOOKS .........................43/44.83+
  PANEL HANGER WHEEL MOUNT ..........16/104
  PIPE JOINT ........................285/272+
     MULTIPLE .......................285/168
  PUNCHING BAG ......................482/87+
  RAILWAY CAR SUSPENDING ............105/156
  ROD JOINT .........................403/164+
  SLEDS MULTIPLE ....................280/17
  SOCKET COMBINED ...................24/136.L+
  TOOL HANDLE .......................403/52+
  TROLLEY HEAD ELECTRIC COLLECTOR ...191/60+
  TURNBUCKLE ........................403/60
  VALVE DISC ........................251/264+
  VALVE GATE ........................251/193+
  WATCH CHAIN SNAP HOOK .............24/905*
  WHEELED VEHICLE RUNNING GEAR ......280/86
  WOOD SAW ..........................83/747

SWIZZLE STICK ....................... D07/300.2

SWORDS .............................. 30/165+
  CANE ..............................135/66
  CARRIER ...........................224/232+
  DESIGN ............................D22/118+
  HANDLES ...........................D08/DIG.5
  PISTOL ............................42/53

SYLPHON T M (SEE BELLOWS)
  FLOWMETER .........................73/262
  FLUID PRESSURE GUAGE ..............73/729.1+
  FLUID PRESSURE REGULATOR ..........137/505.36
  MAKING ............................29/454
     CORRUGATING ....................72/54+
  PUMP ..............................417/472+


SYNCHRONIZING
  CAMERA AND FLASH POWDER ...........354/129+
  CAMERA AND PHOTOFLASH TESTING .....356/72
  CAMERA SHUTTER RELEASE AND LIGHT ..354/129+
  CLOCK .............................368/52
     ELECTROMECHANICAL ..............968/506+
     ELECTRONIC .....................968/920+
  CLUTCHES ..........................192/52+
  DYNAMOELECTRIC MACHINE  307/43+
     INTERCONNECTION ................307/43+
  ELECTRIC MOTOR ....................318/41+
  ELECTRIC MOTOR ....................318/85
  FLUID PRESSURE BRAKE SYSTEMS ......303/35+
  GEARING ...........................74/339+
  GOVERNOR ..........................73/507
     IMPELLER COMBINED ..............416/34
  MOTION PICTURE AND SOUND ..........352/12+
  MULTIPLE MOTOR ....................60/700+
  MULTIPLE MOTOR ....................60/706+
  MUSICAL INSTRUMENT ................84/119
  PLURAL RADIO STATIONS .............455/51.1+
  TELECOMMUNICATIONS, SATELLITE .....455/13.2
  TELEGRAPHY ........................375/106+
  TELEGRAPHY MULTIPLEX ..............370/47+
  TELEVISION ........................358/148+
     RECORDING OR REPRODUCING COLOR  358/319
       SIGNAL .......................358/319

SYNCHRONOUS MOTOR ................... 310/162+
  CLOCK .............................968/553+
  SYSTEMS ...........................318/700+

SYNCHROSCOPE ........................ 324/91

SYNTHESIS
  ELECTRO ...........................204/59.R+
  INORGANIC COMPOUNDS ...............23
  ORGANIC COMPOUNDS .................260
  POLYMERS (SEE SYNTHETIC RESIN OR
     NATURAL RUBBER)


SYNTHETIC
  ALUMINA ...........................423/625
  DIAMOND AND MAKING ................423/446+
  GEM ...............................501/86
  RESIN (SEE SYNTHETIC RESIN OR
     NATURAL RUBBER)
  RUBBER (SEE RUBBER; SYNTHETIC RESIN
     OR NATURAL RUBBER)


SYNTHETIC RESIN OR NATURAL RUBBER
  ABS (SEE ALSO PREPARED FROM, BELOW)526/338
  ADDITION POLYMERIZATION ...........526/72+
     MANIPULATIVE PROCESS FEATURES ..526/59+
  ADHESIVE MATERIAL .................520/1+
     COMPOSITIONS (SEE CLASS 523,524)
  ADMIXTURES OF RESINS OR RUBBERS ...525/50+
  AFTERTREATMENTS
     CHEMICAL REACTION INVOLVED .....525/50+
       TO PRODUCE ION EXCHANGE RESIN 521/25+
       UTILIZING WAVE ENERGY ........522/1+
       VULCANIZATION OF RUBBER       525/331.9+
        (PRODUCTS) ..................525/331.9+
       VULCANIZATION OF RUBBER WITH  525/343+
        SULFUR OR SULFUR COMPOUND ...525/343+
       WITH ASPHALT OR BITUMINOUS    525/54.5+
        MATERIAL ....................525/54.5+
       WITH CARBOHYDRATE ............525/54.2+
       WITH FATTY ACID OR FATTY      525/50+
        ACID GLYCEROL ESTER .........525/50+
       WITH NATURAL RESIN ...........525/54.4+
       WITH PROTEIN OR BIOLOGICALLY  525/54.1+
        ACTIVE POLYPEPTIDE ..........525/54.1+
     PHYSICAL TREATMENT .............528/480+
       COMPOSITIONS .................523/300+
       COMPOSITIONS: CREAMING,       523/335
        CONCENTRATING OR  523/335
        AGGLOMERATING LATEX .........523/335
       NATURAL RUBBER E.G 528/931*
        EXTRACTION OF RUBBER FROM    528/931*
        PLANT SOURCE ................528/931*
       NATURAL RUBBER LATEX .........528/934*
       NATURAL RUBBER LATEX          528/936*
        COAGULATING .................528/936*
       NATURAL RUBBER LATEX          528/937*
        CONCENTRATING ...............528/937*
       NATURAL RUBBER LATEX          528/935*
        PRESERVING ..................528/935*
  ALKYD RESIN (SOLID POLYMER) .......528/272+
     COMPOSITIONS (SEE CLASS 523,524)
     CONTAINING CHEMICALLY COMBINED  528/295.5
       FATTY ACID OR FATTY ACID      528/295.5
       GLYCERIDE ....................528/295.5
     CONTAINING CHEMICALLY COMBINED  527/604
       NATURAL RESIN ................527/604
  AMINOPLAST RESIN (SEE ALSO PREPARED528/266
     FROM ALDEHYDES, BELOW) .........528/266
  BAKELITE T M TYPE RESIN ...........528/129+
  BALATA (SEE NATURAL RUBBER, BELOW)
  BLENDS OF SOLID POLYMERS ..........525/50+
  BLOCK AND BLOCK TYPE COPOLYMERS ...524/88+
  BUNA T M TYPE RUBBER ..............526/339
  BUNA-N (BUTADIENE NITRILE RUBBER) .526/338
  CATALYSTS
     ALDEHYDE POLYMERIZATION ........528/232+
       WITH PHENOL ..................528/137+
     CHALCOGEN RING OPENING .........528/406+
     EPOXY RESIN ....................528/88+
     ETHYLENIC POLYMERIZATION .......526/89+
       GRAFT POLYMERIZATION .........525/244+
       REDOX ........................526/915*
       TRANSITION METAL .............526/90+
     POLYESTER ......................528/274+
       WITH ETHYLENIC MONOMER .......525/11+
     SILICONE .......................528/12+
     URETHANE .......................528/48+
  CELLULAR OR POROUS ................521/50+
     BLENDS OF SYNTHETIC RESIN OR    521/134+
       NATURAL RUBBER ...............521/134+
     BLOWING AGENT I.E  FOAMING      521/82+
       AGENT ........................521/82+
       RESIN FORMATION IN THE        521/99+
        PRESENCE OF .................521/99+
     CARBODIIMIDE POLYMER ...........521/901*
     DEGRADABILITY ENHANCED .........521/916*
     DYE OR PIGMENT CONTAINING ......521/920*
     ELECTRICAL OR WAVE ENERGY USED  521/50.5
       DURING CELL FORMING ..........521/50.5
     ETHYLENE POLYMER ...............521/143+
     FIREPROOFED ....................521/82+
       NON-URETHANE RESIN ...........521/907*
       RESIN FORMATION IN PRESENCE   521/99+
        OF FIREPROOFING AGENT .......521/99+
       URETHANE RESIN ...............521/906*
     HYDRAULIC CEMENT CTG (SEE WATER
       SETTABLE INORGANIC COMPOSITION
       CTG, BELOW)
     INTEGRAL SKIN FOAM .............521/51
     ISOCYANURATE POLYMER ...........521/902*
     KICKER OR BLOWING AGENT         521/909*
       MODERATOR ....................521/909*
     LATEX RUBBER ...................521/65+
     NATURAL RESIN CONTAINING .......521/84.1
       SYNTHETIC RESIN FORMATION IN  521/109.1
        THE PRESENCE OF .............521/109.1
     NATURAL RUBBER CONTAINING ......521/150
       LATEX ........................521/65+
     NUCLEATING AGENTS FOR ..........521/908*
     PHENOLIC RESIN .................521/180+
     PIGMENT CONTAINING .............521/920*
     POLYESTER RESIN ................521/182+
       WITH UNSATURATED MONOMER .....521/128
     PROTEIN CONTAINING .............521/84.1
       RESIN FORMATION IN THE        521/109.1
        PRESENCE OF .................521/109.1
     REDUCED SMOKE FORMATION ........521/903*
     RETICULATED FOAM ...............521/52
     SEPARATED REACTIVE MATERIALS    521/912*
       E.G  "TWO PACKAGE SYSTEM" ....521/912*
     SINTERING PROCESS FOR521/919*
       FORMATION OF PORUS PRODUCT ...521/919*
     STYRENE POLYMER ................521/146+
       FOAMED BEADS .................521/56+
     SYNTACTIC FOAM .................521/53+
       NON RESINOUS HOLLOW PARTICLES 523/218+
     URETHANE POLYMER ...............521/155+
     VINYL CHLORIDE POLYMER .........521/145
  COMPOSITIONS (SEE CLASS 523, 524)
     ADHESIVE (SEE CLASS 523, 524)
       ANEROBIC .....................523/176
       GLASS SUBSTRATE ..............523/168
     ANTIOXIDANT CONTAINING  SEE
       CLASS 523, 524
     ANTISATIC ......................524/910*
     ASPHALT CONTAINING .............524/59+
       RESIN PRODUCED IN PRESENCE OF 524/705
       WITH EPOXY RESIN .............523/450
       WITH POLYESTER-UNSATURATED    523/518
        MONOMER .....................523/518
     BIOCIDALLY PROTECTED ...........523/122
     BITUMEN CTG (SEE ASPHALT CTG,
       ABOVE)
     BODY CONTACT OR IMPLANTABLE     523/105+
       (INTENDED USE) ...............523/105+
     BRAKE SHOE (INTENDED USE) ......523/149+
     CARBOHYDRATE CONTAINING ........524/27+
       RESIN PRODUCED IN PRESENCE OF 524/732+
       WITH EPOXY RESIN .............523/447+
       WITH POLYESTER-UNSATURATED    523/509
        MONOMER .....................523/509
     CARBON BLACK CONTAINING  SEE
       CLASS 523, 524
       RESIN PRODUCED IN PRESENCE OF 524/847
       SPECIFIED DIMENSION ..........524/495+
       WITH EPOXY RESIN .............523/440
       WITH POLYESTER-UNSATURATED    523/512
        MONOMER .....................523/512
     CASTOR OIL CONTAINING ..........524/310
       RESIN PRODUCED IN PRESENCE OF 524/769
     CELLULAR PLANT OR ANIMAL        524/9+
       MATERIAL CONTAINING ..........524/9+
       RESIN PRODUCED IN PRESENCE OF 524/702
       WITH EPOXY RESIN .............523/446
       WITH POLYESTER-UNSATURATED    523/500+
        MONOMER .....................523/500+
     CELLULOSE ETHER OR ESTER CTG
       (SEE CARBOHYDRATE CTG, ABOVE)
       WITH POLYESTER-UNSATURATED    523/509
        MONOMER .....................523/509
     CHINAWOOD OIL CONTAINING  SEE
       FATTY ACID TRIGLYCERIDE,BELOW
     COATING (SEE CLASS 523, 524)
       ANTIFOGGING ..................523/169
       GLASS ENAMEL .................523/170
       INK FOR GLASS SUBSTRATE ......523/160
     CONCRETE CTG (SEE INORGANIC
       WATER-SETTABLE, BELOW)
     CONTACT LENS, USED FOR (SEE ALSO523/106+
       CLASS 527-937) ...............523/106+
     CORK CTG (SEE CELLULAR PLANT OR
       ANIMAL MATERIAL, ABOVE)
     DEGRADABILITY ENHANCED I.E  PRO-523/124+
       DEGRADANT CONTAINING .........523/124+
     DISPERSIONS (SEE EMULSIONS,
       BELOW)
     DRYING OIL CTG (SEE FATTY ACID
       TRIGLYCERIDE, BELOW)
     DYE CTG (SEE CLASS 523,524)
     EMULSIONS (SEE CLASS 523, 524)
       AQUEOUS (SEE ALSO 524-501) ...524/800+
     EPOXIDE RESIN CONTAINING .......523/400+
     FATTY ACID TRIGLYCERIDE CTG ....524/313
       RESIN PRODUCED IN PRESENCE OF 524/773+
       WITH EPOXY RESIN .............523/455
       WITH POLYESTER-UNSATURATED    523/511
        MONOMER .....................523/511
     FEATHER CTG (SEE CELLULAR PLANT
       OR ANIMAL MATERIAL, ABOVE)
     FIREPROOFED (SEE CLASS 523,524)
     FLUX CTG (SEE CLASS 523,524)
     FOUNDRY MOLD OR MOLD CORE BINDER523/139+
     HAIR CTG (SEE CELLULAR PLANT OR
       ANIMAL MATERIAL, ABOVE)
     HEAT STABILIZED (SEE CLASS 523,
       524)
     INORGANIC WATER SETTABLE        524/2+
       MATERIAL CTG E.G  HYDRAULIC   524/2+
       CEMENT .......................524/2+
       RESIN PRODUCED IN PRESENCE OF 524/650+
       WITH EPOXY RESIN .............523/402+
       WITH POLYESTER-UNSATURATED    523/501+
        MONOMER .....................523/501+
     LACQUER (SEE CLASS 523, 524)
     LATEX (SEE CLASS 523, 524)
       COAGULATING ..................528/936*
       CONCENTRATING ................528/937*
       CREAMING, AGGLOMERATING OR    523/335
        COALESCING ..................523/335
       PHYSICAL TREATMENT OF NATURAL 528/934*
        RUBBER LATEX ................528/934*
       PRESERVING OR STABILIZING ....528/935*
       RESIN PRODUCED IN PRESENCE OF 524/800
        WATER .......................524/800
     LEATHER CTG (SEE CELLULAR
       PLANT OR ANIMAL MATERIAL,
       ABOVE)
     LIGNIN OR TANNIN CONTAINING ....524/76
       RESIN PRODUCED IN PRESENCE OF 524/735
       WITH EPOXY RESIN .............523/400+
       WITH POLYESTER-UNSATURATED    523/500+
        MONOMER .....................523/500+
     LINSEED OIL CTG (SEE FATTY ACID
       TRIGLYCERIDE, ABOVE)
     MOLDING (SEE CLASS 523, 524)
     NATURAL RESIN CTG (SEE ALSO     524/77
       ROSIN , BELOW) ...............524/77
       SYNTHETIC RESIN PRODUCED IN   524/764
        THE PRESENCE OF .............524/764
       WITH EPOXY RESIN .............523/400+
       WITH POLYESTER-UNSATURATED    523/500+
        MONOMER .....................523/500+
     NATURAL RESIN CTG (SEE CLASS
       523, 524 TREATED AS
       POLYISOPRENE)
       GUAYULE ......................528/930*
     PHONOGRAPH RECORD (INTENDED     523/174
       USE) .........................523/174
     PIGMENT CTG (SEE CLASS 523, 524)
     PLASTICIZER CTG (SEE CLASS 523,
       524)
     PROTEIN OR BIOLOGICALLY ACTIVE  524/17+
       POLYPEPTIDE CTG ..............524/17+
       RESIN PRODUCED IN PRESENCE OF 524/704
       WITH EPOXY RESIN .............523/449
       WITH POLYESTER-ETHYLENIC      523/500+
        MONOMER .....................523/500+
     ROSIN CONTAINING ...............524/270+
       SYNTHETIC RESIN PRODUCED IN   524/764
        THE PRESENCE OF .............524/764
     TANNIN CTG (SEE LIGNIN, ABOVE)
     TAR CTG (SEE ASPHALT, ABOVE)
     VARNISH (SEE CLASS 523, 524)
     WAX CONTAINING .................524/487+
       OXYGEN CONTAINING WAX ........524/275+
       OXYGEN CTG WAX WITH EPOXY     523/455+
        RESIN .......................523/455+
       OXYGEN CTG WAX WITH POLYESTER 523/511
        UNSATURATED MONOMER .........523/511
       RESIN PRODUCED IN PRESENCE OF 524/763+
        OXYGEN CTG WAX ..............524/763+
  CONDENSATION POLYMERIZATION .......528
     MANIPULATIVE PROCESS FEATURES ..526/59+
  COUMARONE RESIN ...................526/266+
  DACRON T M TYPE RESIN .............528/308.1+
  EBONITE T M TYPE RESIN ............525/332.6+
  ELASTOMER (SEE RUBBER, BELOW)
  E P (ETHYLENE-PROPYLENE) ..........526/348+
  E P D M (ETHYLENE-PROPYLENE-DIENE  526
     MONOMER) .......................526
     CURED OR VULCANIZED ............525/331.7+
  EPOXIDE RESIN (SEE ALSO CLASSES    528/87+
     525, 528) ......................528/87+
  FOAMS .............................521/50+
  G R - N (ACRYLONITRILE-BUTADIENE   526/338
     RUBBER) ........................526/338
  G R - S (STYRENE-BUTADIENE RUBBER) 526/340
  GRAFT OR GRAFT TYPE ...............525/50+
  GUAYULE (SEE ALSO NATURAL RUBBER) .528/930*
  HEVEA (SEE NATURAL RUBBER)
  HYPALON T M TYPE RESIN ............525/333.9
  ION EXCHANGE RESIN ................521/25+
  IONOMER RESIN SYSTEMS .............525/919*
     CARBOXYL BEARING ...............526/317.1+
  KRATON T M TYPE RESIN (STYRENE-    526/340
     BUTADIENE RUBBER) ..............526/340
  LEXAN T M TYPE RESIN ..............528/196+
  LUCITE T M TYPE RESIN .............526/329.7
  MELAMINE RESIN ....................528/254+
  NATURAL RUBBER (NOTE: FOR PURPOSES
     OF THE CLASS 520 SERIES NATURAL
     RUBBER IS CONSIDERED TO BE
     POLYISOPRENE)
  NEOPRENE ..........................526/295
     VULCANIZED .....................525/330.9+
  NYLON .............................528/310+
  PERBUNAN T M TYPE RUBBER (COPOLYMER526/338
     BUTADIENE-ACRYLONITRILE) .......526/338
  PHENOLIC RESIN ....................528/129+
  PHENOPLAST ........................528/129
  PHENOXY RESIN .....................528/86+
  PLEXIGLAS T M TYPE RESIN526/329.7
     (POLYMETHYL METHACRYLATE) ......526/329.7
  POLYAMIDE RESIN (SEE ALSO 528-332+)528/310+
  POLYCARBODIIMIDE ..................528/44+
  POLYESTERS ........................528/272+
  POLYIMIDE .........................528/310+
  POLYPHENYLENE OXIDE ...............525/905*
  POLYSULFIDE .......................528/373+
  PREPARED FROM
     ACETYLENE ......................526/285
     ACROLEIN .......................526/315
     ACRYLATES ......................526/328+
     ACRYLIC ACID ...................526/317.1+
     ACRYLONITRILE ..................526/341+
     ALDEHYDE E.G  HOMOPOLYMER OF    528/230
       SATURATED ETC ................528/230
       ETHYLENICALLY UNSATURATED ....526/315
       HYDROCARBON ..................528/247
       MELAMINE .....................528/254+
       UREA .........................528/259+
       WITH AMINE E.G  ANILINE ETC ..528/266+
       WITH KETONE ..................528/227
       WITH PHENOL ..................528/129+
     ASPHALT OR BITUMINOUS MATERIAL .527/500
       UNSATURATED ..................526/290
     BUTADIENE ......................526/335+
     CARBOHYDRATES E.G  SUGAR,       527/300+
       STARCH ETC ...................527/300+
       UNSATURATED CARBOHYDRATE      526/238.2+
        DERIVATIVE ..................526/238.2+
     CARBOXYLIC ACID OR DERIVATIVE ..528/271+
       ETHYLENICALLY UNSATURATED ....526/317.1+
     CASHEW NUT LIQUOR ..............528/2+
     CELLULAR PLANT OR ANIMAL        527/100+
       MATERIAL .....................527/100+
     CHLOROPRENE ....................526/295
     COAL DERIVED MATERIAL  SEE
       ASPHALT OR BITUMINOUS
       MATERIAL, ABOVE
     CORK ...........................527/100+
     COUMARONE ......................526/266+
     DIOLEFIN HYDROCARBON ...........526/335+
       CYCLOALIPHATIC ...............526/308
       FUSED OR BRIDGED RING ........526/280+
     EPOXIDE COMPOUND ...............528/403+
       DIGLYCIDYL ETHER OF BISPHENOL 528/87+
        COMPOUND (SEE ALSO 525-523+; 528/87+
        525-107+;525-403+) ..........528/87+
       ETHYLENICALLY UNSATURATED ....526/273+
     ETHYLENE (HOMOPOLYMER) .........526/352+
       COPOLYMER ....................526/72+
     ETHYLENIC MONOMER (SOLELY       526/72+
       THEREFROM) ...................526/72+
       WITH NON-ETHYLENIC MONOMER    528
        (SEE ALSO CLASS 527)) .......528
     FORMALDEHYDE (SEE ALDEHYDE,
       ABOVE)
     FURFURAL (SEE ALSO ALDEHYDE,    526/270
       ABOVE) .......................526/270
       WITH NON-ETHYLENIC MONOMER ...528/230+
     HYDROCARBONS ...................528/396+
       ETHYLENICALLY UNSATURATED     526/348+
        (SEE ALSO 526-335;526-346)) .526/348+
     INDENE .........................526/280+
       WITH COUMARONE ...............526/266+
     ISOBUTYLENE ....................526/348.7
       WITH BUTYDIENE ...............526/339
     ISOCYANATE COMPOUND ............528/44+
     ISOPRENE (NOTE: FOR PURPOSES OF 526/340.2
       THE CLASS 520 SERIES NATURAL  526/340.2
       RUBBER IS CONSIDERED TO BE    526/340.2
       POLYISOPRENE) ................526/340.2
     LIGNIN .........................527/400+
     MELAMINE (SEE ALDEHYDE, ABOVE)
     METAL COMPOUNDS ................528/395
       ETHYLENICALLY UNSATURATED     526/240
        MONOMER .....................526/240
       ORGANOMETALLIC ...............528/9
     METHACRYLATE ...................526/319+
     METHACRYLIC ACID ...............526/317.1+
     METHYLMETHACRYLATE .............526/319+
     MONOEPOXIDES (SEE EPOXIDE,ABOVE)
     OLEFIN .........................526/72+
     OXIRANE COMPOUNDS (SEE EPOXIDE,
       ABOVE)
     PHOSPHOROUS COMPOUNDS ..........528/398+
       ETHYLENICALLY UNSATURATED ....526/274+
     PLANT EXTRACT OF UNDETERMINED   528/1+
       CONSTITUTION .................528/1+
     POLYEPOXIDE COMPOUND  SEE
       EPOXIDE,ABOVE
     PROPYLENE (HOMOPOLYMER) ........526/351
       COPOLYMER ....................526/72+
     PROTEIN OR BIOLOGICALLY ACTIVE  527/200+
       POLYPEPTIDE ..................527/200+
       ETHYLENICALLY UNSATURATED     526/238.1
        DERIVATIVE ..................526/238.1
     SILICON COMPOUND ...............528
       ETHYLENICALLY UNSATURATED ....526/279
       SI- H OR SI- C ...............528/10+
     TANNIN .........................527/400+
       ETHYLENICALLY UNSATURATED     526/238.2+
        MONOMER .....................526/238.2+
     TAR OR PITCH ...................527/500+
       ETHYLENICALLY UNSATURATED     526/290
        DERIVATIVE ..................526/290
     TETRA FLUOROETHYLENE ...........526/242+
     UREA (SEE ALDEHYDE, ABOVE)
     VINYL CHLORIDE .................526/344+
     VINYL COMPOUNDS ................526/72+
     VINYLIDENE COMPOUNDS ...........526/72+
  PURIFICATION OF ...................528/480+
     COMPOSITION ....................524/310
  RECLAIMING ........................521/40+
  RUBBER ............................520/1+
     DIENE RUBBER ...................526/72+
     SPANDEX T M TYPE ...............528/44+
     THIOKOL T M TYPE ...............528/374+
     VULCANIZED .....................525/332.5+
       E P D M ......................525/331.8
  RUBBER HYDROCHOLRIDE ..............525/332.3
  SILASTIC (ORGANOSILICON POLYMER) ..528/10+
  SILICONE RESIN ....................528/10+
     COMPOSITIONS ...................524/858+
     ROOM TEMPERATURE VULCANIZING    528/901*
       (RTV RUBBER) .................528/901*
  SYNTHETIC RUBBER (FOR PURPOSES OF
     CLASS 520, IS CONSIDERED TO BE A
     SYNTHETIC RESIN)
  TEFLON T M (POLYTETRAFLUORO-       526/255
     ETHYLENE) ......................526/255
  WAVE ENERGY UTILIZED ..............522/1+

SYNTHOL ............................. 518/700+


SYRINGE
  DENTAL ............................D24/113+
  DISPENSER .........................222/206+
     WITH FOLLOWER ..................222/386+
  HAND HELD .........................604/187+
  PUMP ..............................417/437+
  SPECIFIC GRAVITY TESTER ...........73/441+
  SPRAYER
     LIQUID PUMP FEED ...............239/329+
     PISTON FEED ....................239/320+
  SURGICAL ..........................604/187+
     AIR ............................604/26
     DESIGN .........................D24/113+
     EAR ............................604/187+
     EYE ............................604/295+
     FLUID OPERATED .................604/131+
     FOUNTAIN .......................604/131+
     HAND HELD ......................604/187+
     HYDRANT ........................604/150
     INDICATION OF DEFECT OR USE ....604/111
     IRRIGATION .....................604/187+
     MOTORIZED ......................128/DIG.1
     NOZZLE .........................604/275
     PISTON .........................604/218+
     POCKET CONTAINER FOR ...........206/364+
     PREVENTING REUSE ...............604/110
     PROJECTILE .....................604/130
     RECEPTACLE FOR .................206/364+
     SIPHON .........................604/131+
     THERMAL MEDICATOR ..............604/113+
     WITH LIGHT AND ELECTRICAL       604/20+
       APPLICATION ..................604/20+

SYRUPS
  CONDIMENTS AND FLAVORS ............426/658+
  ELECTROLYTIC TREATMENT ............204/138
  MALT ..............................426/44
  SUGARS ONLY .......................127/30+
     AIRCRAFT CONTROL ...............244/175+
     STOVES AND FURNACES ............126

SYSTOLIC PROCESSOR
  ARRAY PROCESSOR ...................395/800
  NEURAL NETWORK ....................395/27