US PATENT SUBCLASS 313 / 571
.~.~.~ Includes mercury in gas or vapor fill
Current as of:
June, 1999
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313 /
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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.
