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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)
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 (dynamo-electric relays H01H 53/00; conversion of dc or ac input power into surge output power H02M 9/00)
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]
H02M 1/00
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Details of apparatus for conversion [1, 2007.01]
H02M 3/00
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Conversion of dc power input into dc power output
H02M 5/00
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Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
H02M 7/00
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Conversion of ac power input into dc power outputConversion of dc power input into ac power output
H02M 9/00
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Conversion of dc or ac input power into surge output power [2]
H02M 11/00
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Power conversion systems not covered by the other groups of this subclass [4]
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 OR REACTORS OR CHOKE COILS [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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