US PATENT SUBCLASS 327 / 356
.~.~ Product

Current as of: June, 1999
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327 /   HD   MISCELLANEOUS ACTIVE ELECTRICAL NONLINEAR DEVICES, CIRCUITS, AND SYSTEMS

334  DF  SPECIFIC INPUT TO OUTPUT FUNCTION {9}
355  DF  .~ Combining of plural signals {3}
356.~.~ Product {3}
357  DF  .~.~.~> Quadrant
358  DF  .~.~.~> Having feedback
359  DF  .~.~.~> Differential amplifier

DEFINITION

Classification: 327/356

Product:

(under subclass 355) Subject matter wherein the output signal represents an analog multiplication of plural input signals.

SEE OR SEARCH THIS CLASS, SUBCLASS:

113+, for frequency control including frequency multiplication.

178+, for pulse waveform amplitude (e.g., gain) control.

306+, for miscellaneous waveform amplitude (e.g., gain) control.

SEE OR SEARCH CLASS

708, Electrical Computers: Arithmetic Processing and Calculating, 620+, for digital computer multipliers and subclasses 835+ for analog computer multipliers.