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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
H02
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GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
H02B
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BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER (basic electric elements, their assembly, including the mounting in enclosures or on bases, or the mounting of covers thereon, see the subclasses for such elements, e.g. transformers H01F, switches, fuses H01H, line connectors H01R; installation of electric cables or lines, or of combined optical and electric cables or lines, or other conductors for supply or distribution H02G)
H02B 1/00
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Frameworks, boards, panels, desks, casingsDetails of substations or switching arrangements [5]
H02B 1/01
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Frameworks [5]
H02B 1/015
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Boards, panels, desksParts thereof or accessories therefor [5]
H02B 1/03
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. . for energy meters [5]
H02B 1/04
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. . Mounting thereon of switches or of other devices in general, the switch or device having, or being without, casing
H02B 1/044
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. . . Mounting through openings [5]
H02B 1/048
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. . . . Snap mounting [5]
H02B 1/052
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. . . Mounting on rails [5]
H02B 1/056
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. . . Mounting on plugboards [5]
H02B 1/06
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. . having associated enclosures, e.g. for preventing access to live parts (shutters or guards for contacts H02B 1/14)
H02B 1/14
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Shutters or guards for preventing access to contacts (shielding of isolating-contacts in withdrawable switchgear H02B 11/24)
H02B 1/16
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Earthing arrangements (earthing arrangements for substations H02B 5/01, for switchgear H02B 11/28, H02B 13/075; earth plates, pins, or other contacts H01R 4/66) [5]
H02B 1/18
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Disposition or arrangement of fuses (for switchgear having a withdrawable carriage H02B 11/26) [5]
H02B 1/20
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Bus-bar or other wiring layouts, e.g. in cubicles, in switchyards (installations of bus-bars H02G 5/00)
H02B 1/21
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. . Bus-bar arrangements for rack-mounted devices with withdrawable units [5]
H02B 1/22
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. . Layouts for duplicate bus-bar selection
H02B 1/24
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Circuit arrangements for boards or switchyards (devices for displaying diagrams H02B 15/00; service supply H02J 11/00)
H02B 1/26
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CasingsParts thereof or accessories therefor (adapted for a single switch H01H; enclosures for cables, lines or bus-bars H02G; distribution, connection or junction boxes H02G 3/08; casings in general H05K) [5]
H02B 1/28
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. . dustproof, splashproof, drip-proof, waterproof or flameproof [5]
H02B 1/30
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. . Cabinet-type casingsParts thereof or accessories therefor [5]
H02B 1/32
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. . . Mounting of devices therein [5]
H02B 1/34
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. . . . Racks [5]
H02B 1/36
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. . . . . with withdrawable units [5]
H02B 1/38
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. . . Hinged covers or doors [5]
H02B 1/40
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. . Wall-mounted casingsParts thereof or accessories therefor [5]
H02B 1/42
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. . . Mounting of devices therein [5]
H02B 1/44
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. . . Hinged covers or doors [5]
H02B 1/46
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. . BoxesParts thereof or accessories therefor [5]
H02B 1/48
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. . . Mounting of devices therein [5]
H02B 1/50
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. . Pedestal- or pad-mounted casingsParts thereof or accessories therefor [5]
H02B 1/52
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. . Mobile units, e.g. for work sites [5]
H02B 1/54
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Anti-seismic devices or installations (for buildings in general E04B 1/98) [5]
H02B 1/56
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CoolingVentilation [5]
H02B 3/00
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Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
H02B 5/00
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Non-enclosed substationsSubstations with enclosed and non-enclosed equipment
H02B 7/00
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Enclosed substations, e.g. compact substations [5]
H02B 11/00
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Switchgear having carriage withdrawable for isolation
H02B 13/00
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Arrangement of switchgear in which switches are enclosed in, or structurally associated with, a casing, e.g. cubicle (in association with main transformer H02B 5/00, H02B 7/00; switchgear having carriage withdrawable for isolation H02B 11/00) [5]
H02B 15/00
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Supervisory desks or panels for centralised control or display (desks in general A47B)
H02B 99/00
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Subject matter not provided for in other groups of this subclass [2009.01]
H02G
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INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES (insulated conductors or cables with arrangements for facilitating mounting or securing H01B 7/40; distribution points incorporating switches H02B; guiding telephone cords H04M 1/15; cable ducts or mountings for telephone or telegraph exchange installations H04Q 1/06)
H02H
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EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS (indicating or signalling undesired working conditions G01R, e.g. G01R 31/00, G08B; locating faults along lines G01R 31/08; emergency protective devices H01H)
H02J
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CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWERSYSTEMS FOR STORING ELECTRIC ENERGY (power supply circuits for apparatus for measuring X-radiation, gamma radiation, corpuscular radiation or cosmic radiation G01T 1/175; electric power supply circuits specially adapted for use in electronic time-pieces with no moving parts G04G 19/00; for digital computers G06F 1/18; for discharge tubes H01J 37/248; circuits or apparatus for the conversion of electric power, arrangements for control or regulation of such circuits or apparatus H02M; interrelated control of several motors, control of a prime-mover/generator combination H02P; control of high-frequency power H03L; additional use of power line or power network for transmission of information H04B)
H02K
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DYNAMO-ELECTRIC MACHINES (measuring instruments G01; dynamo-electric relays H01H 53/00; conversion of dc or ac input power into surge output power H02M 9/00; loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers H04R)
H02M
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APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMSCONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWERCONTROL OR REGULATION THEREOF (conversion of current or voltage specially adapted for use in electronic time-pieces with no moving parts G04G 19/02; systems for regulating electric or magnetic variables in general, e.g. using transformers, reactors or choke coils, combination of such systems with static converters G05F; for digital computers G06F 1/00; transformers H01F; connection or control of one converter with regard to conjoint operation with a similar or other source of supply H02J; dynamo-electric converters H02K 47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P; pulse generators H03K) [4, 5]
H02N
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ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
H02P
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CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERSCONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS (structure of the starter, brake, or other control devices, see the relevant subclasses, e.g. mechanical brake F16D, mechanical speed regulator G05D, variable resistor H01C, starter switch H01H; systems for regulating electric or magnetic variables using transformers, reactors or choke coils G05F; arrangements structurally associated with motors, generators, dynamo-electric converters, transformers, reactors or choke coils, see the relevant subclasses, e.g. H01F, H02K; connection or control of one generator, transformer, reactor, choke coil, or dynamo-electric converter with regard to conjoint operation with similar or other source of supply H02J; control or regulation of static converters H02M) [4]
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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