US PATENT SUBCLASS 307 / 141.4
.~.~.~ Electrically initiated

Current as of: June, 1999
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307 /   HD   ELECTRICAL TRANSMISSION OR INTERCONNECTION SYSTEMS

112  DF  SWITCHING SYSTEMS {5}
139  DF  .~ Switch actuation {5}
141  DF  .~.~ With time delay or retardation means {2}
141.4.~.~.~ Electrically initiated

DEFINITION

Classification: 307/141.4

(under subclass 141) Subject matter having an electromagnetic operator which, when energized, mechanically initiates operation of the time delay means.