US PATENT SUBCLASS 313 / 104
.~ Plural secondary emissive electrodes

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

523  DF  PHOTOSENSITIVE {12}
104.~ Plural secondary emissive electrodes {1}
105 R  DF  .~.~> Three or more {1}

DEFINITION

Classification: 313/104

(under subclass 103) Discharge devices having a plurality of secondarily emissive electrodes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

306+, and the subclasses specified in the notes thereto for other discharge devices which have a plurality of cathodes.