US PATENT SUBCLASS 455 / 338
.~.~ Coupling or decoupling between stages

Current as of: June, 1999
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130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
334  DF  .~ With particular receiver circuit {6}
338.~.~ Coupling or decoupling between stages {2}
339  DF  .~.~.~> Band pass filter
340  DF  .~.~.~> Variably tunable or adjustable

DEFINITION

Classification: 455/338

Coupling or decoupling between stages:

(under subclass 334) Systems including means whereby two or more stages or systems are electrically associated in such a manner that electrical effects in one produce similar effects in the other or networks are used to prevent interaction or coupling between two electric circuits.

SEE OR SEARCH THIS CLASS, SUBCLASS:

280+, for receivers with particular coupling means between antenna and input circuit.

319+, for local oscillator with particular coupling.

SEE OR SEARCH CLASS

330, Amplifiers, appropriate subclasses for amplifiers with coupling or decoupling means.

331, Oscillators, 74+, for oscillators with particular output coupling networks, per se, comprised of passive elements.

333, Wave Transmission Lines and Networks,

24+, for coupling networks, per se, comprised of passive elements.

336, Inductor Devices, appropriate subclasses for transformers adapted to be used as coupling means.