US PATENT SUBCLASS 379 / 170
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Current as of: June, 1999
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379 /   HD   TELEPHONIC COMMUNICATIONS

167  DF  PRIVATE (E.G., HOUSE OR INTERCOM) OR SINGLE LINE SYSTEM {6}
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DEFINITION

Classification: 379/170

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(under subclass 167) Subject matter which produces a perceptible call notification signal intended for a specific individual.

(1) Note. This subclass includes an audible or other individualized signal for summoning an individual to a particular location.

(2) Note. The subject matter in this subclass excludes ringing or other nonindividualized call alerting signals.