US PATENT SUBCLASS 313 / 579
.~.~ Tungsten-halogen cycle lamp

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

567  DF  WITH GAS OR VAPOR {24}
578  DF  .~ Incandescent filament lamp {2}
579.~.~ Tungsten-halogen cycle lamp

DEFINITION

Classification: 313/579

Tungsten-halogen cycle lamp:

(under subclass 578) Subject matter wherein the filament is tungsten and the gas includes, (1) a hologen, or (2) a halogen compound containing gas, or (3) a halogen compound within the envelope.

SEE OR SEARCH THIS CLASS, SUBCLASS:

548, for a lamp or discharge device having heating means to control an incandescent lamp getter.

557, for an incandescent lamp having a getter.