US PATENT SUBCLASS 34 / 199
.~.~.~ Zigzag treating gas or vapor flow

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

523  DF  APPARATUS {40}
192  DF  .~ Removable shelf or tray type {4}
195  DF  .~.~ With gas or vapor circulation for contact with treated material {3}
199.~.~.~ Zigzag treating gas or vapor flow

DEFINITION

Classification: 34/199

(under subclass 195) Apparatus in which the treating gas or vapor flows in a back-and-forth path.

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226, and see notes.