US PATENT SUBCLASS 455 / 71
.~.~.~ Frequency control

Current as of: June, 1999
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39  DF  TRANSMITTER AND RECEIVER AT SEPARATE STATIONS {14}
68  DF  .~ With control signal {2}
70  DF  .~.~ Receiver control signal originates at message transmitter {2}
71.~.~.~ Frequency control

DEFINITION

Classification: 455/71

Frequency control:

(under subclass 70) Subject matter where the frequency to which the receiver is tuned is controlled.

SEE OR SEARCH THIS CLASS, SUBCLASS:

151.1, for remote control of channel or station selection in a receiver.