US PATENT SUBCLASS 313 / 570
.~.~ Greater than 760 torr

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

DEFINITION

Classification: 313/570

Greater than 760 torr:

(under subclass 568) Subject matter wherein the gas or vapor pressure is in excess of one atomsphere.

(1) Note. One torr is equal to one millimeter of pressure.