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H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02K—DYNAMO-ELECTRIC MACHINES
H02K31/00—Acyclic motors or generators, i.e. DC machines having drum or disc armatures with continuous current collectors
H02K31/02—Acyclic motors or generators, i.e. DC machines having drum or disc armatures with continuous current collectors with solid-contact collectors
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FR417754D1910-06-061910-06-06
Lubrication device for dynamos
ExpiredFR417754A
(en)