US PATENT SUBCLASS 455 / 319
.~.~.~ With particular coupling

Current as of: June, 1999
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130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
313  DF  .~ Frequency modifying or conversion {4}
318  DF  .~.~ With specified local oscillator structure or coupling {2}
319.~.~.~ With particular coupling {1}
320  DF  .~.~.~.~> Lumped impedance

DEFINITION

Classification: 455/319

With particular coupling:

(under subclass 318) Subject matter including significant details of circuitry whereby the output of the local oscillator means is coupled to the frequency modifying or conversion means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

338, for subject matter relating to particular coupling means between stages of a receiver system.