US PATENT SUBCLASS 34 / 76
.~.~.~ With forced circulation

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

523  DF  APPARATUS {40}
72  DF  .~ With means to treat gas or vapor {3}
73  DF  .~.~ By vapor condensation {4}
76.~.~.~ With forced circulation {1}
77  DF  .~.~.~.~> Recirculation of treating gas or vapor

DEFINITION

Classification: 34/76

(under subclass 73) Apparatus in which the vapor or gas and vapor mixture undergoing condensation is forced to circulate by some mechanical means.