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		Class Number and Title
		002	Apparel
		004	Baths, closets, sinks, and spittoons
		005	Beds
		007	Compound tools
		008	Bleaching and dyeing; fluid treatment and chemical modification of textiles and fibers
		012	Boot and shoe making
		014	Bridges
		015	Brushing, scrubbing, and general cleaning
		016	Miscellaneous hardware
		019	Textiles: fiber preparation
		023	Chemistry: physical processes
		024	Buckles, buttons, clasps, etc.
		026	Textiles: cloth finishing
		027	Undertaking
		028	Textiles: manufacturing
		029	Metal working
		030	Cutlery
		033	Geometrical instruments
		034	Drying and gas or vapor contact with solids
		036	Boots, shoes, and leggings
		037	Excavating
		038	Textiles: ironing or smoothing
		040	Card, picture, or sign exhibiting
		042	Firearms
		043	Fishing, trapping, and vermin destroying
		044	Fuel and related compositions
		047	Plant husbandry
		048	Gas: heating and illuminating
		049	Movable or removable closures
		Class Number and Title
		051	Abrasive tool making process, material, or composition
		052	Static structures (e.g., buildings)
		053	Package making
		054	Harness for working animal
		055	Gas separation
		056	Harvesters
		057	Textiles: spinning, twisting, and twining
		059	Chain, staple, and horseshoe making
		060	Power plants
		062	Refrigeration
		063	Jewelry
		065	Glass manufacturing
		066	Textiles: knitting
		068	Textiles: fluid treating apparatus
		069	Leather manufactures
		070	Locks
		071	Chemistry: fertilizers
		072	Metal deforming
		073	Measuring and testing
		074	Machine element or mechanism
		075	Specialized metallurgical processes, compositions for use therein, consolidated metal powder compositions, and loose metal particulate mixtures
		076	Metal tools and implements, making
		079	Button making
		081	Tools
		082	Turning
		083	Cutting
		084	Music
		086	Ammunition and explosive-charge making
		087	Textiles: braiding, netting, and lace making
		Class Number and Title
		089	Ordnance
		091	Motors: expansible chamber type
		092	Expansible chamber devices
		095	Gas separation: processes
		096	Gas separation: apparatus
		099	Foods and beverages: apparatus
		100	Presses
		101	Printing
		102	Ammunition and explosives
		104	Railways
		105	Railway rolling stock
		106	Compositions: coating or plastic
		108	Horizontally supported planar surfaces
		109	Safes, bank protection, or a related device
		110	Furnaces
		111	Planting
		112	Sewing
		114	Ships
		116	Signals and indicators
		117	Single-crystal, oriented-crystal, and epitaxy growth processes; non-coating apparatus therefor
		118	Coating apparatus
		119	Animal husbandry
		122	Liquid heaters and vaporizers
		123	Internal-combustion engines
		124	Mechanical guns and projectors
		125	Stone working
		126	Stoves and furnaces
		127	Sugar, starch, and carbohydrates
		128	Surgery
		Class Number and Title
		131	Tobacco
		132	Toilet
		134	Cleaning and liquid contact with solids
		135	Tent, canopy, umbrella, or cane
		136	Batteries: thermoelectric and photoelectric
		137	Fluid handling
		138	Pipes and tubular conduits
		139	Textiles: weaving
		140	Wireworking
		141	Fluent material handling, with receiver or receiver coacting means
		142	Wood turning
		144	Woodworking
		147	Coopering
		148	Metal treatment
		149	Explosive and thermic compositions or charges
		150	Purses, wallets, and protective covers
		152	Resilient tires and wheels
		156	Adhesive bonding and miscellaneous chemical manufacture
		157	Wheelwright machines
		159	Concentrating evaporators
		160	Flexible or portable closure, partition, or panel
		162	Paper making and fiber liberation
		163	Needle and pin making
		164	Metal founding
		165	Heat exchange
		166	Wells
		168	Farriery
		169	Fire extinguishers
		171	Unearthing plants or buried objects
		Class Number and Title
		172	Earth working
		173	Tool driving or impacting
		174	Electricity: conductors and insulators
		175	Boring or penetrating the earth
		177	Weighing scales
		178	Telegraphy
		180	Motor vehicles
		181	Acoustics
		182	Fire escape, ladder, or scaffold
		184	Lubrication
		185	Motors: spring, weight, or animal powered
		186	Merchandising
		187	Elevator, industrial lift truck, or stationary lift for vehicle
		188	Brakes
		190	Trunks and hand-carried luggage
		191	Electricity: transmission to vehicles
		192	Clutches and power-stop control
		193	Conveyors, chutes, skids, guides, and ways
		194	Check-actuated control mechanisms
		196	Mineral oils: apparatus
		198	Conveyors: power-driven
		199	Type casting
		200	Electricity: circuit makers and breakers
		201	Distillation: processes, thermolytic
		202	Distillation: apparatus
		203	Distillation: processes, separatory
		204	Chemistry: electrical and wave energy
		205	Electrolysis: processes, compositions used therein, and methods of preparing the compositions
		206	Special receptacle or package
		Class Number and Title
		208	Mineral oils: processes and products
		209	Classifying, separating, and assorting solids
		210	Liquid purification or separation
		211	Supports: racks
		212	Traversing hoists
		213	Railway draft appliances
		215	Bottles and jars
		216	Etching a substrate: processes
		217	Wooden receptacles
		218	High-voltage switches with arc preventing or extinguishing devices
		219	Electric heating
		220	Receptacles
		221	Article dispensing
		222	Dispensing
		223	Apparel apparatus
		224	Package and article carriers
		225	Severing by tearing or breaking
		226	Advancing material of indeterminate length
		227	Elongated-member-driving apparatus
		228	Metal fusion bonding
		229	Envelopes, wrappers, and paperboard boxes
		231	Whips and whip apparatus
		232	Deposit and collection receptacles
		234	Selective cutting (e.g., punching)
		235	Registers
		236	Automatic temperature and humidity regulation
		237	Heating systems
		238	Railways: surface track
		239	Fluid sprinkling, spraying, and diffusing
		Class Number and Title
		241	Solid material comminution or disintegration
		242	Winding, tensioning, or guiding
		244	Aeronautics and astronautics
		245	Wire fabrics and structure
		246	Railway switches and signals
		248	Supports
		249	Static molds
		250	Radiant energy
		251	Valves and valve actuation
		252	Compositions
		254	Implements or apparatus for applying pushing or pulling force
		256	Fences
		257	Active solid-state devices (e.g., transistors, solid-state diodes)
		258	Railway mail delivery
		260	Chemistry of carbon compounds
		261	Gas and liquid contact apparatus
		264	Plastic and nonmetallic article shaping or treating: processes
		266	Metallurgical apparatus
		267	Spring devices
		269	Work holders
		270	Sheet-material associating
		271	Sheet feeding or delivering
		273	Amusement devices: games
		276	Typesetting
		277	Seal for a joint or juncture
		278	Land vehicles: animal draft appliances
		279	Chucks or sockets
		280	Land vehicles
		281	Books, strips, and leaves
		Class Number and Title
		283	Printed matter
		285	Pipe joints or couplings
		289	Knots and knot tying
		290	Prime-mover dynamo plants
		291	Track sanders
		292	Closure fasteners
		293	Vehicle fenders
		294	Handling: hand and hoist-line implements
		295	Railway wheels and axles
		296	Land vehicles: bodies and tops
		297	Chairs and seats
		298	Land vehicles: dumping
		299	Mining or in situ disintegration of hard material
		300	Brush, broom, and mop making
		301	Land vehicles: wheels and axles
		303	Fluid-pressure and analogous brake systems
		305	Wheel substitutes for land vehicles
		307	Electrical transmission or interconnection systems
		310	Electrical generator or motor structure
		312	Supports: cabinet structure
		313	Electric lamp and discharge devices
		314	Electric lamp and discharge devices: consumable electrodes
		315	Electric lamp and discharge devices: systems
		318	Electricity: motive power systems
		320	Electricity: battery or capacitor charging or discharging
		322	Electricity: single generator systems
		323	Electricity: power supply or regulation systems
		324	Electricity: measuring and testing
		326	Electronic digital logic circuitry
		Class Number and Title
		327	Miscellaneous active electrical nonlinear devices, circuits, and systems
		329	Demodulators
		330	Amplifiers
		331	Oscillators
		332	Modulators
		333	Wave transmission lines and networks
		334	Tuners
		335	Electricity: magnetically operated switches, magnets, and electromagnets
		336	Inductor devices
		337	Electricity: electrothermally or thermally actuated switches