US PATENT SUBCLASS 313 / 556
.~ And vapor generator

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

553  DF  WITH GETTER {8}
556.~ And vapor generator

DEFINITION

Classification: 313/556

And vapor generator:

(under subclass 553) Subject matter which includes, in addition to the getter, a material to produce a vapor within the envelope.