US PATENT SUBCLASS 313 / 575
.~.~.~.~ Composite

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

567  DF  WITH GAS OR VAPOR {24}
568  DF  .~ Having a particular total or partial pressure {4}
572  DF  .~.~ One torr thru 760 torr {2}
574  DF  .~.~.~ With electrode structure {1}
575.~.~.~.~ Composite {1}
576  DF  .~.~.~.~.~> With rare gas

DEFINITION

Classification: 313/575

Composite:

(under subclass 574) Subject matter including an electrode made of more than one part or material.

(1) Note. Here are electrodes having a base material with a coated, or layered type electrode.

(2) Note. The composite electrode is generally a cathode having a low work function material to increase electron emission.

SEE OR SEARCH THIS CLASS, SUBCLASS:

352+, for composite electrodes.