US PATENT SUBCLASS 324 / 76.81
.~.~ Feedback control, mechanical

Current as of: June, 1999
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324 /   HD   ELECTRICITY: MEASURING AND TESTING

76.11  DF  MEASURING, TESTING, OR SENSING ELECTRICITY, PER SE {46}
76.77  DF  .~ Phase comparison (e.g., between cyclic pulse voltage and sinusoidal current, etc.) {11}
76.81.~.~ Feedback control, mechanical

DEFINITION

Classification: 324/76.81

Feedback control, mechanical:

(under subclass 76.77) Subject matter having mechanical means to control a return path from an output terminal to an input terminal of at least one functional circuit device or circuit.

SEE OR SEARCH CLASS

330, Amplifiers, appropriate subclasses for feedback, per se.