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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21/00
Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
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H02K21/12
with stationary armatures and rotating magnets
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H02K21/24
with magnets axially facing the armatures, e.g. hub-type cycle dynamos
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