US PATENT SUBCLASS 379 / 324
.~.~ Central power source (e.g., common battery, line current feed)

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

242  DF  CENTRALIZED SWITCHING SYSTEM {15}
322  DF  .~ Power supply {2}
324.~.~ Central power source (e.g., common battery, line current feed)

DEFINITION

Classification: 379/324

Central power source (e.g., common battery, line current feed):

(under subclass 322) Subject matter where a single power supply provides electricity for a plurality of branches connected to the central switching equipment.

SEE OR SEARCH THIS CLASS, SUBCLASS:

318, for line signal control with a central power source.