US PATENT SUBCLASS 324 / 123 C
.~.~ Feedback amplifiers

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}
123 R  DF  .~ With amplifier or space discharge device {2}
123 C.~.~ Feedback amplifiers

Unofficial Alpha Subclasses: R C

DEFINITION

Classification: 324/123

(under subclass 76) Subject matter having an amplifier or having a space discharge device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

117, for this subject matter utilizing magnetic saturation type amplifiers.

121, for this subject matter when the space discharge device is a cathode-ray tube.

122, for this subject matter when the space discharge device is a gaseous discharge device.

SEE OR SEARCH CLASS 330, Amplifiers, for amplifiers, per se.