US PATENT SUBCLASS 165 / 222
.~.~ Humidity control

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}
222.~.~ Humidity control {2}
223  DF  .~.~.~> Humidity sensor measures humidity of air in conditioned space {3}
230  DF  .~.~.~> Dewpoint controlled (e.g., control of cooling means by downstream temperature sensor to maintain controlled dewpoint of downstream air, etc.)

DEFINITION

Classification: 165/222

Humidity control:

(under subclass 201) Subject matter further including means to control atmospheric water vapor content in the area.

SEE OR SEARCH CLASS

34, Drying and Gas or Vapor Contact With Solids,

50, for drying apparatus with a humidity controller for the contacting gas.

62, Refrigeration,

176.1+, for refrigeration system with humidity sensor.

236, Automatic Temperature and Humidity Regulation,

44+, for humidity control devices; subclass 91 for thermostatic control of hot and cold with humidity sensor.