US PATENT SUBCLASS 313 / 162
.~.~ Three or more electrodes

Current as of: June, 1999
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313 /   HD   ELECTRIC LAMP AND DISCHARGE DEVICES

153  DF  WITH MAGNETIC DEVICE {4}
160  DF  .~ With envelope {2}
162.~.~ Three or more electrodes

DEFINITION

Classification: 313/162

(under subclass 160) Subject matter where the lamp or discharge device has three or more electrodes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

306+, and the subclasses specified in the notes thereto, for other discharge devices under the class definition which have three or more electrodes.