US PATENT SUBCLASS 165 / 273
.~.~ Control of quantity of inert gas

Current as of: June, 1999
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165 /   HD   HEAT EXCHANGE

200  DF  WITH TIMER, PROGRAMMER, TIME DELAY, OR CONDITION RESPONSIVE CONTROL {14}
272  DF  .~ Control of heat pipe heat transfer characteristics {2}
273.~.~ Control of quantity of inert gas

DEFINITION

Classification: 165/273

Control of quantity of inert gas:

(under subclass 272) Subject matter including a means to control the amount of inert gas present within said cavity.

SEE OR SEARCH THIS CLASS, SUBCLASS:

104.32, for heat exchange apparatus having intermediate liquid fluent heat exchange material with pressurizing or degassifying means; subclasses 281+ for heat exchange apparatus having fluid pressure responsive or control.