US PATENT SUBCLASS 379 / 261
.~.~.~ Operator controlled register-sender

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

242  DF  CENTRALIZED SWITCHING SYSTEM {15}
258  DF  .~ Switching controlled in response to called station addressing signal {9}
260  DF  .~.~ With operator position or completion of call (e.g., dial "O", semiautomatic) {4}
261.~.~.~ Operator controlled register-sender

DEFINITION

Classification: 379/261

Operator controlled register-sender:

(under subclass 260) Subject matter wherein a register-sender is located at an operator attended switchboard for manual actuation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

239, for a plural exchange network with a register-sender.

288, for common control central switching with a register-sender.