US PATENT SUBCLASS 361 / 198
.~.~.~.~.~ Including three or more electrodes (e.g., unijunction)

Current as of: June, 1999
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361 /   HD   ELECTRICITY: ELECTRICAL SYSTEMS AND DEVICES

139  DF  CONTROL CIRCUITS FOR ELECTROMAGNETIC DEVICES {7}
160  DF  .~ For relays or solenoids {11}
195  DF  .~.~ Time delay {3}
196  DF  .~.~.~ Including semiconductor device connected to timing element {1}
197  DF  .~.~.~.~ Threshold device (e.g., zener, schockley diode) {1}
198.~.~.~.~.~ Including three or more electrodes (e.g., unijunction)

DEFINITION

Classification: 361/198

Including three or more electrodes (e.g., unijunction):

(under subclass 197) Subject matter wherein the semiconductor device has three or more electrodes.