US PATENT SUBCLASS 331 / 117 FE
.~.~.~ Field-effect transistor active element

Current as of: June, 1999
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331 /   HD   OSCILLATORS

107 R  DF  SOLID STATE ACTIVE ELEMENT OSCILLATOR {6}
108 R  DF  .~ Transistors {11}
117 R  DF  .~.~ L-C type {2}
117 FE.~.~.~ Field-effect transistor active element

Unofficial Alpha Subclasses: R FE D

DEFINITION

Classification: 331/117

(under subclass 108) Subject matter wherein the frequency determining element of the oscillator is of lumped parameter LC type.

SEE OR SEARCH THIS CLASS, SUBCLASS:

95, for oscillators wherein the LC resonator is of the butterfly type.

96+, for oscillators wherein the resonator is of the distributed parameter type.

128, wherein a gaseous space discharge device is utilized to impulse or shock excite an LC circuit.

154+, for oscillators having a frequency determining element of the electromechanical type (e.g., tuning fork, magnetostrictive, or piezoelectric vibrator).

165+, for shock-excited LC circuits in general. 167+, for LC type oscillators in general.