US PATENT SUBCLASS 455 / 35.1
.~ Tone coded squelch


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



455 /   HD   TELECOMMUNICATIONS

31.1  DF  SYSTEM WITH RECEIVER SELECTION {4}
35.1.~ Tone coded squelch {1}
36.1  DF  .~.~> Plural tones {1}


DEFINITION

Classification: 455/35.1

Tone coded squelch:

(under subclass 31.1) Subject matter having device whereby the operating condition of the audio section of a remote receiver is controlled from a distance by means of tone which is sent over an intervening wired or a radio modulated carrier wave circuit.