US PATENT SUBCLASS 313 / 576
.~.~.~.~.~ With rare gas

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}
572  DF  .~.~ One torr thru 760 torr {2}
574  DF  .~.~.~ With electrode structure {1}
575  DF  .~.~.~.~ Composite {1}
576.~.~.~.~.~ With rare gas

DEFINITION

Classification: 313/576

With rare gas:

(under subclass 575) Subject matter which also includes noble gas.

(1) Note. The rare gases are helium, neon, argon, krypton or xenon. These gases are also know as the noble or inert gases.

SEE OR SEARCH THIS CLASS, SUBCLASS:

641, for a lamp or discharge device having a mercury vapor, rare earth metal and a rare gas atomsphere.

642, for a lamp or discharge device including a mercury vapor and a rare gas atmosphere.

643, for a lamp or discharge device including one or more rare gases.