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A
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SECTION A — HUMAN NECESSITIES
B
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SECTION B — PERFORMING OPERATIONSTRANSPORTING
B01
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SEPARATINGMIXING
B01
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PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL (furnaces, kilns, ovens, retorts, in general F27)
B02
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CRUSHING, PULVERISING, OR DISINTEGRATINGPREPARATORY TREATMENT OF GRAIN FOR MILLING
B03
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SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGSMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDSSEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS (separating isotopes B01D 59/00; crushing or disintegrating B02C; centrifuges or vortex apparatus for carrying out physical processes B04) [5]
B04
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CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
B05
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SPRAYING OR ATOMISING IN GENERALAPPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL (domestic cleaning A47L; cleaning in general by methods essentially involving the use or presence of liquid B08B 3/00; sand-blasting B24C; coating of articles during shaping of substances in a plastic state B29C 39/10, B29C 39/18, B29C 41/20, B29C 41/30, B29C 43/18, B29C 43/28, B29C 45/14, B29C 47/02; for further classification of forming layered products, seeB32B; printing, copying B41; conveying articles or workpieces through baths of liquid B65G, e.g. B65G 49/02; handling webs or filaments in general B65H; surface treatment of glass by coating C03C 17/00, C03C 25/10; coating or impregnation of mortars, concrete, stone or ceramics C04B 41/45, C04B 41/61, C04B 41/81; paints, varnishes, lacquers C09D; enamelling of metals, applying a vitreous layer to metals, chemical cleaning or de-greasing of metallic objects C23; electroplating C25D; treating of textile materials by liquids, gases or vapours D06B; laundering D06F; treating roads E01C; apparatus or processes for the preparation or treatment of photosensitive materials G03; apparatus or processes, restricted to a purpose fully provided for in a single other class, see the relevant class covering the purpose) [2]
B06
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GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
B07
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SEPARATING SOLIDS FROM SOLIDSSORTING (separation in general B01D; wet separating processes, sorting by processes using fluent material in the same way as liquid B03; using liquids B03B, B03D; sorting by magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high voltage electric fields B03C; centrifuges or vortex apparatus for carrying out physical processes B04; sorting peculiar to particular materials or articles and provided for in other classes, see the relevant classes)
B08
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CLEANING
B09
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DISPOSAL OF SOLID WASTERECLAMATION OF CONTAMINATED SOIL (treatment of waste water, sewage or sludge C02F; treating radioactively contaminated solids G21F 9/28) [3, 6]
B21
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SHAPING
B21
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MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIALPUNCHING METAL (casting, powder metallurgy B22; shearing B23D; working of metal by the action of a high concentration of electric current B23H; soldering, welding, flame-cutting B23K; other working of metal B23P; punching sheet material in general B26F; processes for changing of physical properties of metals C21D, C22F; electroforming C25D 1/00)
B22
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CASTINGPOWDER METALLURGY
B23
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MACHINE TOOLSMETAL-WORKING NOT OTHERWISE PROVIDED FOR (punching, perforating, making articles by processing sheet metal, tubes, or profiles B21D; wire-working B21F; making pins, needles, or nails B21G; making chains B21L; grinding B24)
B24
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GRINDINGPOLISHING
B25
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HAND TOOLSPORTABLE POWER-DRIVEN TOOLSHANDLES FOR HAND IMPLEMENTSWORKSHOP EQUIPMENTMANIPULATORS
B26
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HAND CUTTING TOOLSCUTTINGSEVERING
B27
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WORKING OR PRESERVING WOOD OR SIMILAR MATERIALNAILING OR STAPLING MACHINES IN GENERAL
B28
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WORKING CEMENT, CLAY, OR STONE
B29
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WORKING OF PLASTICSWORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL (processing doughs A21C; working chocolate A23G; casting of metals B22; working cement, clay B28; chemical aspects, see section C, particularly C08; working glass C03B; candle making C11C 5/02; making soap C11D 13/00; manufacture of artificial filaments, threads, fibres, bristles or ribbons D01D, D01F; manufacture of articles from cellulosic fibrous suspensions or from papier-mâche D21J)
B30
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PRESSES
B31
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MAKING PAPER ARTICLESWORKING PAPER (making layered products not composed wholly of paper or cardboard B32B; handling thin material, e.g. sheets, webs, B65H)
B32
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LAYERED PRODUCTS
B41
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PRINTING
B41
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PRINTINGLINING MACHINESTYPEWRITERSSTAMPS (reproduction or duplication of pictures or patterns by scanning and converting into electrical signals H04N) [4]
B42
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BOOKBINDINGALBUMSFILESSPECIAL PRINTED MATTER
B43
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WRITING OR DRAWING IMPLEMENTSBUREAU ACCESSORIES
B44
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DECORATIVE ARTS
B60
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TRANSPORTING
B60
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VEHICLES IN GENERAL
B61
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RAILWAYS
B62
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LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
B63
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SHIPS OR OTHER WATERBORNE VESSELSRELATED EQUIPMENT
B64
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AIRCRAFTAVIATIONCOSMONAUTICS
B64B
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LIGHTER-THAN-AIR AIRCRAFT (ground installations for aircraft in general B64F)
B64C
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AEROPLANESHELICOPTERS (air-cushion vehicles B60V)
B64C 1/00
Aircraft structures or fairings (boundary-layer controls B64C 21/00)
B64C 1/00
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FuselagesConstructional features common to fuselages, wings, stabilising surfaces, or the like (aerodynamical features common to fuselages, wings, stabilising surfaces, or the like B64C 23/00; flight-deck installations B64D)
B64C 3/00
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Wings (stabilising surfaces B64C 5/00; ornithopter wings B64C 33/02)
B64C 3/10
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Shape of wings
B64C 3/14
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. . Aerofoil profile
B64C 3/16
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. . Frontal aspect
B64C 3/18
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SparsRibsStringers (attaching wing unit to fuselage B64C 1/26)
B64C 3/20
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Integral or sandwich constructions (layered products or sandwich constructions in general B32B)
B64C 3/22
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Geodetic or other open-frame structures
B64C 3/24
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Moulded or cast structures
B64C 3/26
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Construction, shape, or attachment of separate skins, e.g. panels
B64C 3/28
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Leading or trailing edges attached to primary structures, e.g. forming fixed slots
B64C 3/30
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comprising inflatable structural components (connection of valves to inflatable elastic bodies B60C 29/00)
B64C 3/32
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specially adapted for mounting power plant
B64C 3/34
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Integrally-constructed tanks, e.g. for fuel (other aircraft fuel tanks or fuel systems B64D)
B64C 3/36
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Structures adapted to reduce effects of aerodynamic or other external heating
B64C 3/38
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Adjustment of complete wings or parts thereof
B64C 3/40
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. . Varying angle of sweep
B64C 3/42
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. . Adjusting about chordwise axes
B64C 3/44
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. . Varying camber
B64C 3/46
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. . . by inflatable elements (connection of valves to inflatable elastic bodies B60C 29/00)
B64C 3/48
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. . . by relatively-movable parts of wing structures
B64C 3/50
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. . . by leading or trailing edge flaps (ailerons B64C 9/00)
B64C 3/52
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. . Warping
B64C 3/54
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. . Varying in area (flaps extendable to increase camber B64C 3/44)
B64C 3/56
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. . Folding or collapsing to reduce overall dimensions of aircraft
B64C 3/58
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provided with fences or spoilers (adjustable for control purposes B64C 9/00)
B64C 5/00
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Stabilising surfaces (attaching stabilising surfaces to fuselage B64C 1/26)
B64C 7/00
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Structures or fairings not otherwise provided for
B64C 9/00

B64C 9/00
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Adjustable control surfaces or members, e.g. rudders (trimming stabilising surfaces B64C 5/10; systems for actuating flying-control surfaces B64C 13/00)
B64C 11/00
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Propellers, e.g. of ducted typeFeatures common to propellers and rotors for rotorcraft (rotors specially adapted for rotorcraft B64C 27/32)
B64C 13/00
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Control systems or transmitting systems for actuating flying-control surfaces, lift-increasing flaps, air brakes, or spoilers
B64C 15/00
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Attitude, flight direction, or altitude control by jet reaction (details of jet-engine plants, e.g. of nozzles or jet pipes, F02K) [3]
B64C 17/00
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Aircraft stabilisation not otherwise provided for
B64C 19/00
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Aircraft control not otherwise provided for
B64C 21/00
Influencing air-flow over aircraft surfaces, not otherwise provided for
B64C 21/00
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Influencing air-flow over aircraft surfaces by affecting boundary-layer flow (boundary-layer control in general F15D)
B64C 23/00
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Influencing air-flow over aircraft surfaces, not otherwise provided for
B64C 25/00

B64C 25/00
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Alighting gear (air-cushion alighting gear B60V 3/08)
B64C 27/00
Aircraft kinds or components not otherwise provided for
B64C 27/00
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RotorcraftRotors peculiar thereto (alighting gear B64C 25/00)
B64C 29/00
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Aircraft capable of landing or taking-off vertically (attitude, flight direction, or altitude control by jet reaction B64C 15/00; rotorcraft B64C 27/00; air-cushion vehicles B60V; details of jet-engine plants, e.g. of nozzles or jet pipes, F02K)
B64C 30/00
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Supersonic type aircraft [3]
B64C 31/00
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Aircraft intended to be sustained without power plantPowered hang-glider-type aircraftMicrolight-type aircraft
B64C 33/00
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Ornithopters
B64C 35/00
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Flying-boatsSeaplanes (alighting gear B64C 25/00)
B64C 37/00
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Convertible aircraft (vehicles capable of travelling in or on different media B60F)
B64C 39/00
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Aircraft not otherwise provided for
B64D
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EQUIPMENT FOR FITTING IN OR TO AIRCRAFTFLYING SUITSPARACHUTESARRANGEMENTS OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS
B64F
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GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS
B64G
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COSMONAUTICSVEHICLES OR EQUIPMENT THEREFOR (apparatus for, or methods of, winning materials from extraterrestrial sources E21C 51/00)
B65
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CONVEYINGPACKINGSTORINGHANDLING THIN OR FILAMENTARY MATERIAL
B66
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HOISTINGLIFTINGHAULING
B67
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OPENING OR CLOSING BOTTLES, JARS OR SIMILAR CONTAINERSLIQUID HANDLING (nozzles in general B05B; packaging liquids B65B, e.g. B65B 3/00; pumps in general F04; siphons F04F 10/00; valves F16K; handling liquefied gases F17C)
B68
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SADDLERYUPHOLSTERY
B81
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MICRO-STRUCTURAL TECHNOLOGYNANO-TECHNOLOGY
B81
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MICRO-STRUCTURAL TECHNOLOGY [7]
B82
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NANO-TECHNOLOGY [7]
B99
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SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]
C
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SECTION C — CHEMISTRYMETALLURGY
D
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SECTION D — TEXTILESPAPER
E
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SECTION E — FIXED CONSTRUCTIONS
F
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SECTION F — MECHANICAL ENGINEERINGLIGHTINGHEATINGWEAPONSBLASTING
G
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SECTION G — PHYSICS
H
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SECTION H — ELECTRICITY

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