US PATENT SUBCLASS 165 / 234
.~.~ Control of static pressure of conditioned space

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}
201  DF  .~ Having heating and cooling capability {13}
234.~.~ Control of static pressure of conditioned space {1}
235  DF  .~.~.~> Space is within aircraft

DEFINITION

Classification: 165/234

Control of static pressure of conditioned space:

(under subclass 201) Subject matter including a means to control the pressure within the area.

SEE OR SEARCH CLASS

52, Static Structures (e.g., Buildings),

1, for static structures controlled by condition responsive means.

236, Automatic Temperature and Humidity Regulation,

49.3, for electrically actuated ventilators.

454, Ventilation, 70, 74 for vehicle ventilation system having pressure regulating means; subclasses 238, 255, 340 for ventilation system having pressure regulating means.