US PATENT SUBCLASS 379 / 194
.~ Lockout or double use signalling

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

188  DF  CALL OR TERMINAL ACCESS ALARM OR CONTROL {5}
194.~ Lockout or double use signalling {1}
195  DF  .~.~> In automatic system

DEFINITION

Classification: 379/194

Lockout or double use signalling:

(under subclass 188) Subject matter which locks access to, or indicates an attempt to access, the system by a station other than one previously in use.

SEE OR SEARCH THIS CLASS, SUBCLASS:

160, for this subject matter in a key telephone system.

168, for this subject matter in a private system.

184, for this subject matter in a party line system.