US PATENT SUBCLASS 310 / 135
.~.~.~.~ Commutator in field circuit

Current as of: June, 1999
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310 /   HD   ELECTRICAL GENERATOR OR MOTOR STRUCTURE

10  DF  DYNAMOELECTRIC {5}
40 R  DF  .~ Rotary {28}
127  DF  .~.~ Plural collector-type machines {4}
128  DF  .~.~.~ Commutator and slip-ring type {4}
135.~.~.~.~ Commutator in field circuit

DEFINITION

Classification: 310/135

(under subclass 128) Subject matter having means to connect the field of the dynamoelectric device to the commutator collector.