US PATENT SUBCLASS 379 / 313
.~ Multiple section switchboard

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

242  DF  CENTRALIZED SWITCHING SYSTEM {15}
313.~ Multiple section switchboard {1}
314  DF  .~.~> Auxiliary (e.g., overflow)

DEFINITION

Classification: 379/313

Multiple section switchboard:

(under subclass 242) Subject matter having a switchboard with plural sections, each section having a separate jack connector for each subscriber.