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A
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SECTION A — HUMAN NECESSITIES
B
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SECTION B — PERFORMING OPERATIONSTRANSPORTING
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
H01
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BASIC ELECTRIC ELEMENTS
H01B
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CABLESCONDUCTORSINSULATORSSELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING, OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F 1/00; waveguides H01P; installation of cables or lines, or of combined optical and electric, cables or lines H02G)
H01C
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RESISTORS
H01F
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MAGNETSINDUCTANCESTRANSFORMERSSELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES (ceramics based on ferrites C04B 35/26; alloys C22C; thermomagnetic devices H01L 37/00; loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers H04R) [2]
H01G
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CAPACITORSCAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B 3/00; capacitors with potential-jump or surface barrier H01L 29/00)
H01H
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ELECTRIC SWITCHESRELAYSSELECTORSEMERGENCY PROTECTIVE DEVICES (contact cables H01B 7/10; overvoltage protection resistors, resistive arresters H01C 7/12, H01C 8/04; electrolytic self-interrupters H01G 9/18; switching devices of the waveguide type H01P; devices for interrupted current collection H01R 39/00; overvoltage arresters using spark gaps H01T 4/00; emergency protective circuit arrangements H02H; switching by electronic means without contact-making H03K 17/00)
H01J
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ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps H01T; arc lamps with consumable electrodes H05B; particle accelerators H05H)
H01K
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ELECTRIC INCANDESCENT LAMPS (details or apparatus or processes for manufacture applicable to both discharge devices and incandescent lamps H01J; light sources using a combination of incandescent and other types of light generation H01J 61/96, H05B 35/00; circuits therefor H05B)
H01L
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SEMICONDUCTOR DEVICESELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR (conveying systems for semiconductor wafers B65G 49/07; use of semiconductor devices for measuring G01; details of scanning-probe apparatus, in general G12B 21/00; resistors in general H01C; magnets, inductors, transformers H01F; capacitors in general H01G; electrolytic devices H01G 9/00; batteries, accumulators H01M; waveguides, resonators, or lines of the waveguide type H01P; line connectors, current collectors H01R; stimulated-emission devices H01S; electromechanical resonators H03H; loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers H04R; electric light sources in general H05B; printed circuits, hybrid circuits, casings or constructional details of electrical apparatus, manufacture of assemblages of electrical components H05K; use of semiconductor devices in circuits having a particular application, see the subclass for the application) [2]
H01M
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PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY (electrochemical processes or apparatus in general C25; semiconductor or other solid state devices for converting light or heat into electrical energy H01L, e.g. H01L 31/00, H01L 35/00, H01L 37/00) [2]
H01M 2/00
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Constructional details, or processes of manufacture, of the non-active parts [2]
H01M 4/00
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Electrodes (electrodes for electrolytic processes C25) [2]
H01M 4/02
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Electrodes composed of, or comprising, active material [2]
H01M 4/04
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. . Processes of manufacture in general [2]
H01M 4/06
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. . Electrodes for primary cells [2]
H01M 4/08
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. . . Processes of manufacture [2]
H01M 4/10
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. . . . of pressed electrodes with central core, i.e. dollies [2]
H01M 4/12
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. . . . of consumable metal or alloy electrodes (use of alloy compositions as active materials H01M 4/38) [2]
H01M 4/14
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. . Electrodes for lead-acid accumulators [2]
H01M 4/16
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. . . Processes of manufacture [2]
H01M 4/18
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. . . . of Plante electrodes [2]
H01M 4/20
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. . . . of pasted electrodes [2]
H01M 4/21
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. . . . . Drying of pasted electrodes [2]
H01M 4/22
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. . . . Forming of electrodes [2]
H01M 4/23
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. . . . . Drying or preserving electrodes after forming [2]
H01M 4/24
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. . Electrodes for alkaline accumulators [2]
H01M 4/26
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. . . Processes of manufacture [2]
H01M 4/28
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. . . . Precipitating active material on the carrier [2]
H01M 4/29
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. . . . . by electrochemical methods [2]
H01M 4/30
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. . . . Pressing [2]
H01M 4/32
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. . . Nickel oxide or hydroxide electrodes [2]
H01M 4/34
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. . . Silver oxide or hydroxide electrodes [2]
H01M 4/36
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. . Selection of substances as active materials, active masses, active liquids [2]
H01M 4/38
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. . . of elements or alloys [2]
H01M 4/40
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. . . . Alloys based on alkali metals [2]
H01M 4/42
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. . . . Alloys based on zinc [2]
H01M 4/44
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. . . . Alloys based on cadmium [2]
H01M 4/46
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. . . . Alloys based on magnesium or aluminium [2]
H01M 4/48
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. . . of inorganic oxides or hydroxides [2]
H01M 4/50
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. . . . of manganese [2]
H01M 4/52
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. . . . of nickel, cobalt, or iron [2]
H01M 4/54
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. . . . of silver [2]
H01M 4/56
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. . . . of lead [2]
H01M 4/57
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. . . . . of "grey lead", i.e. powders containing lead and lead oxide [2]
H01M 4/58
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. . . of inorganic compounds other than oxides or hydroxides [2]
H01M 4/60
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. . . of organic compounds [2]
H01M 4/62
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. . Selection of inactive substances as ingredients for active masses, e.g. binders, fillers [2]
H01M 4/64
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. . Carriers or collectors [2]
H01M 4/66
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. . . Selection of materials [2]
H01M 4/68
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. . . . for use in lead-acid accumulators [2]
H01M 4/70
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. . . characterised by shape or form [2]
H01M 4/72
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. . . . Grids [2]
H01M 4/73
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. . . . . for lead-acid accumulators, e.g. frame plates [2]
H01M 4/74
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. . . . . Meshes or woven materialExpanded metal [2]
H01M 4/75
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. . . . Wires, rods, or strips [2]
H01M 4/76
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. . . . Containers for holding the active material, e.g. tubes, capsules [2]
H01M 4/78
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. . . . Shapes other than plane or cylindrical, e.g. helical [2]
H01M 4/80
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. . . . Porous plates, e.g. sintered carriers [2]
H01M 4/82
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. . . Multi-step processes for manufacturing carriers for lead-acid accumulators (single-step processes, see the relevant subclasses, e.g. B21D, B22D) [2]
H01M 4/84
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. . . . involving casting [2]
H01M 4/86
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Inert electrodes with catalytic activity, e.g. for fuel cells [2]
H01M 4/88
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. . Processes of manufacture [2]
H01M 4/90
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. . Selection of catalytic material [2]
H01M 4/92
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. . . Metals of platinum group (H01M 4/94 takes precedence) [2]
H01M 4/94
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. . Non-porous diffusion electrodes, e.g. palladium membranes, ion exchange membranes [2]
H01M 4/96
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. . Carbon-based electrodes [2]
H01M 4/98
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. . Raney-type electrodes [2]
H01M 6/00
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Primary cellsManufacture thereof [2]
H01M 8/00
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Fuel cellsManufacture thereof [2]
H01M 10/00
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Secondary cellsManufacture thereof [2]
H01M 12/00
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Hybrid cellsManufacture thereof [2]
H01M 14/00
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Electrochemical current or voltage generators not provided for in groups H01M 6/00-H01M 12/00Manufacture thereof [2]
H01M 16/00
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Structural combinations of different types of electrochemical generators [2]
H01P
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WAVEGUIDESRESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B; aerials H01Q; networks comprising lumped impedance elements H03H)
H01Q
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AERIALS (microwave radiators for near-field therapeutic treatment A61N 5/04; apparatus for testing aerials or for measuring aerial characteristics G01R; waveguides H01P; radiators or aerials for microwave heating H05B 6/72)
H01R
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ELECTRICALLY-CONDUCTIVE CONNECTIONSSTRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTSCOUPLING DEVICESCURRENT COLLECTORS (switches, fuses H01H; coupling devices of the waveguide type H01P 5/00; switching arrangements for the supply or distribution of electric power H02B; installations of electric cables or lines, or of combined optical and electric cables or lines, or of auxiliary apparatus H02G; printed means for providing electric connections to or between printed circuits H05K)
H01S
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DEVICES USING STIMULATED EMISSION
H01T
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SPARK GAPSOVERVOLTAGE ARRESTERS USING SPARK GAPSSPARKING PLUGSCORONA DEVICESGENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES (working of metal by the action of a high concentration of electric current B23H; welding, e.g. arc welding, electron beam welding or electrolytic welding, B23K; gas-filled discharge tubes with solid cathode H01J 17/00; electric arc lamps H05B 31/00)
H02
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GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
H03
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BASIC ELECTRONIC CIRCUITRY
H04
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ELECTRIC COMMUNICATION TECHNIQUE
H05
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ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
H99
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SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]

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