US PATENT SUBCLASS 313 / 569
.~.~ Incandescent lamp

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}
569.~.~ Incandescent lamp

DEFINITION

Classification: 313/569

Incandescent lamp:

(under subclass 568) Subject matter which includes a filament type lamp.

SEE OR SEARCH THIS CLASS, SUBCLASS:

315+, for incandescent glower or filament type lamps with or without an enclosing envelope.

548, for incandescent lamp gettering by heating means.

557, for incandescent lamp with getter including gettering and gettering material.

578+, for a gas or vapor type incandescent lamp.