US PATENT SUBCLASS 327 / 441
.~.~.~.~ Plural or combined with other four or more layer device


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

365  DF  GATING (I.E., SWITCHING INPUT TO OUTPUT) {12}
419  DF  .~ Utilizing three or more electrode solid-state device {7}
438  DF  .~.~ Four or more layer device (e.g., thyristor, etc.) {6}
440  DF  .~.~.~ GTO (i.e., gate turnoff) {3}
441.~.~.~.~ Plural or combined with other four or more layer device


DEFINITION

Classification: 327/441

Plural or combined with other four or more layer device:

(under subclass 440) Subject matter having more than one gate turnoff device or having at least one GTO and another four or more layer device.