US PATENT SUBCLASS 331 / 168
.~ Plural tubes
Current as of: June, 1999
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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.