US PATENT SUBCLASS 455 / 334
.~ With particular receiver circuit

Current as of: June, 1999
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455 /   HD   TELECOMMUNICATIONS

130  DF  RECEIVER OR ANALOG MODULATED SIGNAL FREQUENCY CONVERTER {24}
334.~ With particular receiver circuit {6}
335  DF  .~.~> Plural diverse function tube or stage (performs plural functions alternately or concurrently)
336  DF  .~.~> Superregenerative detector or discriminator
337  DF  .~.~> Discriminator or demodulator
338  DF  .~.~> Coupling or decoupling between stages {2}
341  DF  .~.~> Amplifier {1}
343  DF  .~.~> With particular power or bias supply (includes battery saving means and includes self-powered)

DEFINITION

Classification: 455/334

With particular receiver circuit:

(under subclass 130) Subject matter comprising subcombinations peculiarly adapted for use in a receiver system, and consisting of an electron tube or other active elements combined with particular electric circuit means in either the input or output thereof.

(1) Note. This subclass and its indented subclasses provide for subject matter peculiar to and forming subcombinations of receiver apparatus which are not sufficiently comprehensively claimed for classification above in this class, but which claim sufficient significant structure to exclude the subject matter claimed from art classified elsewhere. See Search Notes under subclass 130.