US PATENT SUBCLASS 131 / 303
.~.~.~ And temperature or humidity control of fluid

Current as of: June, 1999
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131 /   HD   TOBACCO

290  DF  TOBACCO TREATMENT {8}
300  DF  .~ With fluid or fluent material {6}
302  DF  .~.~ Including means to circulate fluid {2}
303.~.~.~ And temperature or humidity control of fluid

DEFINITION

Classification: 131/303

And temperature or humidity control of fluid:

(under subclass 302) Process or apparatus including means to control or regulate the temperature or humidity of the fluid.

SEE OR SEARCH CLASS

236, Automatic Temperature and Humidity Regulation, appropriate subclasses for systems to regulate temperature or humidity in general.