US PATENT SUBCLASS 340 / 652
.~.~.~ Breaking of circuit continuity

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}
652.~.~.~ Breaking of circuit continuity

DEFINITION

Classification: 340/652

Breaking of circuit continuity:

(under subclass 635) Subject matter where the condition monitored is the integrity of a circuit; e.g., power or communication lines.

SEE OR SEARCH THIS CLASS, SUBCLASS:

506, for monitoring alarm circuit continuity.

649, for ground circuit continuity alarm.

SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

539+, for circuit continuity testing as distinguished from continuously monitoring for an alarm condition.