US PATENT SUBCLASS 340 / 639
.~.~.~.~ Plural

Current as of: June, 1999
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340 /   HD   COMMUNICATIONS: ELECTRICAL

500  DF  CONDITION RESPONSIVE INDICATING SYSTEM {6}
540  DF  .~ Specific condition {18}
635  DF  .~.~ Condition of electrical apparatus {15}
638  DF  .~.~.~ Fuse or circuit breaker {1}
639.~.~.~.~ Plural

DEFINITION

Classification: 340/639

Plural:

(under subclass 638) Subject matter where plural fuses or circuit breakers are monitored.