Top IPC subclasses
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1
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B23H
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10
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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 tool; such working combined with other forms of working of metal
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2
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B23K
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5
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soldering or unsolderingweldingcladding or plating by soldering or weldingcutting by applying heat l
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3
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B23P
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4
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other working of metalcombined operationsuniversal machine tools
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4
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H02M
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4
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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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5
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H03K
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2
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pulse technique
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6
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C25D
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1
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processes for the electrolytic or electrophoretic production of coatingselectroformingjoining workpi
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