US PATENT SUBCLASS 331 / 116 M
.~.~.~ Electromechanical resonators other than piezoelectric crystals

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}
116 R  DF  .~.~ Electromechanical resonator controlled {2}
116 M.~.~.~ Electromechanical resonators other than piezoelectric crystals

Unofficial Alpha Subclasses: R FE M

DEFINITION

Classification: 331/116

(under subclass 108) Subject matter wherein the frequency determining element of the oscillator is of the electromechanical resonator type.

SEE OR SEARCH THIS CLASS, SUBCLASS:

73, for electron-coupled plural grid tube oscillators utilizing piezoelectric crystal oscillation frequency determining means.

139, for bridge-type oscillators with piezoelectric crystal in bridge circuit.

154+, for oscillators in general utilizing electromechanical resonator means as the oscillation frequency determining means.