Top IPC subclasses
1
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H02K
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2
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dynamo-electric machines
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2
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G01K
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2
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measuring temperaturemeasuring quantity of heatthermally-sensitive elements not otherwise provided f
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3
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B67D
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1
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dispensing, delivering, or transferring liquids, not otherwise provided for
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4
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G01F
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1
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measuring volume, volume flow, mass flow, or liquid levelmetering by volume
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