US PATENT SUBCLASS 379 / 370
.~.~.~ In handset

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

350  DF  SUPERVISORY OR CONTROL LINE SIGNALLING {5}
352  DF  .~ Substation originated {8}
369  DF  .~.~ Detail of mounting of switch pad or dial {1}
370.~.~.~ In handset

DEFINITION

Classification: 379/370

In handset:

(under subclass 369) Subject matter wherein the actuator and mounting are located in a unitary housing containing both a microphone and earphone.