US PATENT SUBCLASS 290 / 30 B
.~.~ Standby service

Current as of: June, 1999
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290 /   HD   PRIME-MOVER DYNAMO PLANTS

7  DF  ELECTRIC CONTROL {10}
30 R  DF  .~ Demand starters {2}
30 B.~.~ Standby service

Unofficial Alpha Subclasses: R A B

DEFINITION

Classification: 290/30

Prime-mover dynamo plants including a prime mover which operates a generator to supply current to a translating circuit and provided with means for automatically starting the prime mover when the translating circuit is closed or in response to predetermined electrical conditions.