US PATENT SUBCLASS 327 / 477
.~.~ Unijunction transistor (UJT)

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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}
477.~.~ Unijunction transistor (UJT)

DEFINITION

Classification: 327/477

Unijunction transistor (UJT):

(under subclass 419) Subject matter including a three terminal semiconductor having only one pn junction and exhibiting a stable open-circuit negative resistance property.

SEE OR SEARCH THIS CLASS, SUBCLASS:

569, for miscellaneous unijunction transistor circuits.