US PATENT SUBCLASS 331 / 168
.~ Plural tubes

Current as of: June, 1999
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331 /   HD   OSCILLATORS

167  DF  L-C TYPE OSCILLATORS {4}
168.~ Plural tubes

DEFINITION

Classification: 331/168

(under subclass 167) Subject matter wherein the oscillator system includes two or more active elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:

100, for parallel wire resonator oscillators of the push-pull type.

102, for coaxial or shielded line resonator oscillators of the push-pull type.

113, for plural transistor oscillators of the multivibrator type.

130, for plural gas tube relaxation oscillators.

144, for plural tube multivibrators.

159, for plural tube crystal oscillators.