Patent classifications
H
ELECTRICITY
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H02
GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
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H02K
DYNAMO-ELECTRIC MACHINES
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2205/00
Specific aspects not provided for in the other groups of this subclass relating to casings, enclosures, supports
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H02K2205/09
Machines characterised by drain passages or by venting, breathing or pressure compensating means
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