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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
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 [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 [2]
B06
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GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
B07
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SEPARATING SOLIDS FROM SOLIDSSORTING
B08
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CLEANING
B09
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DISPOSAL OF SOLID WASTERECLAMATION OF CONTAMINATED SOIL [3, 6]
B21
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SHAPING
B21
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MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIALPUNCHING METAL
B22
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CASTINGPOWDER METALLURGY
B23
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MACHINE TOOLSMETAL-WORKING NOT OTHERWISE PROVIDED FOR
B23B
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TURNINGBORING (using an electrode which takes the place of a tool B23H, e.g. making holes B23H 9/14; working by laser beam B23K 26/00; arrangements for copying or controlling B23Q)
B23C
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MILLING (broaching B23D; broach-milling in making gears B23F; arrangements for copying or controlling B23Q)
B23D
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PLANINGSLOTTINGSHEARINGBROACHINGSAWINGFILINGSCRAPINGLIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR (making toothed gears or the like B23F; cutting metal by applying heat locally B23K; arrangements for copying or controlling B23Q)
B23F
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MAKING GEARS OR TOOTHED RACKS (by stamping B21D; by rolling B21H; by forging or pressing B21K; by casting B22; arrangements for copying or controlling B23Q; machines or devices for grinding or polishing, in general B24B)
B23G
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THREAD CUTTINGWORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH (thread- forming by corrugating tubes B21D 15/04, by rolling B21H 3/02, by forging, pressing, or hammering B21K 1/56; making helical grooves by turning B23B 5/48, by milling B23C 3/32, by grinding B24B 19/02; arrangements for copying or controlling B23Q)
B23H
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WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOLSUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL (processes for the electrolytic or electrophoretic production of coatings, electroforming, or apparatus therefor C25D; processes for the electrolytic removal of material from objects C25F; manufacturing printed circuits using precipitation techniques to apply the conductive material to form the desired conductive pattern H05K 3/18) [4]
B23K
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SOLDERING OR UNSOLDERINGWELDINGCLADDING OR PLATING BY SOLDERING OR WELDINGCUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTINGWORKING BY LASER BEAM (making metal-coated products by extruding metal B21C 23/22; building up linings or coverings by casting B22D 19/08; casting by dipping B22D 23/04; manufacture of composite layers by sintering metal powder B22F 7/00; arrangements on machine tools for copying or controlling B23Q; covering metals or covering materials with metals, not otherwise provided for C23C; burners F23D)
B23K 1/00
Soldering, e.g. brazing, or unsoldering
B23K 1/00
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Soldering, e.g. brazing, or unsoldering (B23K 3/00 takes precedence; characterised only by the use of special materials or media B23K 35/00; dip or wave soldering in the manufacture of printed circuits H05K 3/34) [5]
B23K 3/00
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Tools, devices, or special appurtenances for soldering, e.g. brazing, or unsoldering, not specially adapted for particular methods (materials used for soldering B23K 35/00) [5]
B23K 5/00
Flame welding or cutting
B23K 5/00
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Gas flame welding
B23K 7/00
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Cutting, scarfing, or desurfacing by applying flames
B23K 9/00
Electric welding or cutting
B23K 9/00
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Arc welding or cutting (electro-slag welding B23K 25/00; welding transformers H01F; welding generators H02K)
B23K 9/007
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Spot arc welding [5]
B23K 9/013
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Arc cutting, gouging, scarfing or desurfacing [5]
B23K 9/02
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Seam weldingBacking meansInserts
B23K 9/022
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. . Welding by making use of electrode vibrations [5]
B23K 9/025
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. . for rectilinear seams [5]
B23K 9/028
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. . for curved planar seams [5]
B23K 9/032
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. . for three-dimensional seams [5]
B23K 9/035
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. . with backing means disposed under the seam [5]
B23K 9/038
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. . using moulding means (not restricted to arc welding B23K 37/06) [5]
B23K 9/04
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Welding for other purposes than joining, e.g. built-up welding
B23K 9/06
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Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc [5]
B23K 9/067
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. . Starting the arc [5]
B23K 9/073
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. . Stabilising the arc [5]
B23K 9/08
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Arrangements or circuits for magnetic control of the arc
B23K 9/09
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Arrangements or circuits for arc welding with pulsed current or voltage [3]
B23K 9/095
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Monitoring or automatic control of welding parameters [5]
B23K 9/10
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Other electric circuits thereforProtective circuitsRemote controls
B23K 9/12
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Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
B23K 9/127
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. . Means for tracking lines during arc welding or cutting (copying in general B23Q 35/00) [5]
B23K 9/133
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. . Means for feeding electrodes, e.g. drums, rolls, motors [5]
B23K 9/14
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making use of insulated electrodes
B23K 9/16
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making use of shielding gas
B23K 9/167
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. . and of a non-consumable electrode [5]
B23K 9/173
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. . and of consumable electrode [5]
B23K 9/18
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Submerged-arc welding
B23K 9/20
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Stud welding
B23K 9/22
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Percussion welding
B23K 9/23
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taking account of the properties of the materials to be welded [3]
B23K 9/235
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Preliminary treatment [3]
B23K 9/24
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Features related to electrodes (form or composition of electrodes B23K 35/00)
B23K 9/26
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. . Accessories for electrodes, e.g. ignition tips
B23K 9/28
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. . Supporting devices for electrodes (not restricted to arc welding or cutting B23K 37/02)
B23K 9/29
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. . . Supporting devices adapted for making use of shielding means [5]
B23K 9/30
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. . . Vibrating holders for electrodes (B23K 9/022 takes precedence) [5]
B23K 9/32
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Accessories (earthing connections H01R)
B23K 10/00
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Welding or cutting by means of a plasma [5]
B23K 11/00
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Resistance weldingSevering by resistance heating
B23K 13/00
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Welding by high-frequency current heating [5]
B23K 15/00
Other welding or cuttingWorking by laser beam [3]
B23K 15/00
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Electron-beam welding or cutting (electron- or ion-beam tubes H01J 37/00)
B23K 17/00
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Use of the energy of nuclear particles in welding or related techniques
B23K 20/00
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Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating [3]
B23K 23/00
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Alumino-thermic welding
B23K 25/00
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Slag welding, i.e. using a heated layer or mass of powder, slag, or the like in contact with the material to be joined (B23K 23/00 takes precedence; submerged-arc welding B23K 9/18)
B23K 26/00
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Working by laser beam, e.g. welding, cutting, boring (lasers H01S 3/00) [2, 3]
B23K 28/00
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Welding or cutting not covered by groups B23K 5/00-B23K 26/00 (joining workpieces by electrolysis C25D 2/00; electrolytic removal of materials C25F) [2]
B23K 31/00

B23K 31/00
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Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by any single one of main groups B23K 1/00-B23K 28/00 (making tubes or profiled bars involving operations other than soldering or welding B21C 37/04, B21C 37/08)
B23K 33/00
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Specially-profiled edge portions of workpieces for making soldering or welding connectionsFilling the seams formed thereby
B23K 35/00
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Rods, electrodes, materials, or media, for use in soldering, welding, or cutting
B23K 37/00
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Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the other main groups of this subclass (eye-shields for welders worn on the operator's body or carried in the hand A61F 9/00; applicable to metal-working machines other than soldering, welding, or flame-cutting machines B23Q; other protective shields F16P 1/06)
B23K 101/00
Indexing scheme associated with groups B23K 1/00-B23K 31/00, relating to articles made by soldering, welding or cutting or to materials to be soldered, welded or cut. [5]
B23K 101/00
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Articles made by soldering, welding or cutting [5]
B23K 103/00
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Materials to be soldered, welded or cut [5]
B23P
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OTHER WORKING OF METALCOMBINED OPERATIONSUNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
B23Q
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DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B 27/00)MACHINE TOOLS IN GENERAL, CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTSCOMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
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
B30
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PRESSES
B31
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MAKING PAPER ARTICLESWORKING PAPER
B32
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LAYERED PRODUCTS
B41
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PRINTING
B41
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PRINTINGLINING MACHINESTYPEWRITERSSTAMPS [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
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
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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