US PATENT SUBCLASS 327 / 358
.~.~.~ Having feedback

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  DF  .~.~ Product {3}
358.~.~.~ Having feedback

DEFINITION

Classification: 327/358

Having feedback:

(under subclass 356) Subject matter wherein a portion of the output signal is returned to an input.