US PATENT SUBCLASS 379 / 49
.~ Central station with plural substations

Current as of: June, 1999
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379 /   HD   TELEPHONIC COMMUNICATIONS

37  DF  EMERGENCY OR ALARM COMMUNICATIONS (E.G., WATCHMAN'S CIRCUIT) {9}
49.~ Central station with plural substations

DEFINITION

Classification: 379/49

Central station with plural substations:

(under subclass 37) Subject matter having a single central alarm station connected to a plurality of terminal stations.