US PATENT SUBCLASS 455 / 77
.~ With tuning

Current as of: June, 1999
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73  DF  TRANSMITTER AND RECEIVER AT SAME STATION (E.G., TRANSCEIVER) {9}
77.~ With tuning

DEFINITION

Classification: 455/77

With tuning:

(under subclass 73) Subject matter having means to control or adjust the frequency of the transmitted or received signal; or the loading or adjustment of the radio frequency circuits is varied.

SEE OR SEARCH THIS CLASS, SUBCLASS:

120+, for transmitter tuning.

150.1, for receiver tuning.

SEE OR SEARCH CLASS

334, Tuners, for passive tuning circuits in general.