US PATENT SUBCLASS 340 / 543
.~.~.~.~ Permutation

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}
541  DF  .~.~ Intrusion detection {8}
542  DF  .~.~.~ Lock {1}
543.~.~.~.~ Permutation

DEFINITION

Classification: 340/543

Permutation:

(under subclass 542) Subject matter where the lock is combination lock (dial, push-button, etc.).

SEE OR SEARCH CLASS

70, Locks,

286+, for combination locks, per se, and subclasses 432+ for locks with condition indicators.

361, Electricity: Electrical Systems and devices,

171+, for code responsive relay systems.