Top IPC subclasses
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1
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H02K
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10
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dynamo-electric machines
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2
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H02M
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3
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apparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use wit
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3
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B23P
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2
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other working of metalcombined operationsuniversal machine tools
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4
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B23K
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2
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soldering or unsolderingweldingcladding or plating by soldering or weldingcutting by applying heat l
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5
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G01M
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1
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testing static or dynamic balance of machines or structurestesting structures or apparatus not other
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