US PATENT SUBCLASS 340 / 825.17
.~.~ With indicator

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

825  DF  SELECTIVE {23}
825.06  DF  .~ Monitoring and control (e.g., supervisory) {8}
825.17.~.~ With indicator

DEFINITION

Classification: 340/825.17

With indicator:

(under subclass 825.06) Subject matter having an element which produces a humanly perceptible signal.