US PATENT SUBCLASS 340 / 825.47
.~.~.~ Group call

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

825  DF  SELECTIVE {23}
825.36  DF  .~ Having indication or alarm (e.g., location indication) {4}
825.44  DF  .~.~ Code responsive (e.g., paging) {4}
825.47.~.~.~ Group call

DEFINITION

Classification: 340/825.47

Group call:

(under subclass 825.44) Subject matter including plural indicating devices each actuated by a signal unique thereto, and each also responsive to a signal actuating a plurality of such indicating devices.

(1) Note. The group call signal may actuate all indicating devices or a subgroup thereof, in the system.