US PATENT SUBCLASS 313 / 571
.~.~.~ Includes mercury in gas or vapor fill


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}
570  DF  .~.~ Greater than 760 torr {1}
571.~.~.~ Includes mercury in gas or vapor fill


DEFINITION

Classification: 313/571

Includes mercury in gas or vapor fill:

(under subclass 570) Subject matter which includes mercury in

the gas or vapor.