US PATENT SUBCLASS 331 / 164
.~.~ Anode or cathode to grid crystal circuit


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331 /   HD   OSCILLATORS

154  DF  ELECTROMECHANICAL RESONATOR {4}
158  DF  .~ Crystal {6}
164.~.~ Anode or cathode to grid crystal circuit


DEFINITION

Classification: 331/164

(under subclass 158) Subject matter wherein the crystal is effectively coupled between the anode or output electrode and the grid or control electrode of the active element of the oscillator.

SEE OR SEARCH THIS CLASS, SUBCLASS:

170+, for LC type oscillators wherein a resonant circuit of the lumped circuit type is connected between the anode and cathode electrodes of the active element of the oscillator.