US PATENT SUBCLASS 34 / 77
.~.~.~.~ Recirculation of treating gas or vapor

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  DF  .~.~.~ With forced circulation {1}
77.~.~.~.~ Recirculation of treating gas or vapor

DEFINITION

Classification: 34/77

(under subclass 76) Apparatus in which the treating gases or vapors are recirculated in whole or part over the condensing means and the material treated.

(1) Note. For other subclasses involving recirculation of the treating gases or vapors, see (1) Note to subclass 219 of this class.