US PATENT SUBCLASS 34 / 213
.~.~.~.~.~ Parallel circulation only

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

523  DF  APPARATUS {40}
201  DF  .~ Houses, kilns, and containers {6}
209  DF  .~.~ Plural treating units or compartments {1}
210  DF  .~.~.~ With gas or vapor circulation for contact with treated material {5}
212  DF  .~.~.~.~ Recirculation of treating gas or vapor {1}
213.~.~.~.~.~ Parallel circulation only

DEFINITION

Classification: 34/213

(under subclass 212) Apparatus in which each separate unit or compartment has a gas or vapor recirculation path individual to it.

(1) Note. The flow may be caused by a single gas or vapor forcing means but where there are two or more separate recirculation paths and any one thereof includes two or more units or compartments, see this class, subclasses 212+.

SEE OR SEARCH THIS CLASS, SUBCLASS:

214, for parallel circulation only, not involving recirculation.