US PATENT SUBCLASS 34 / 195
.~.~ With gas or vapor circulation for contact with treated material

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.~.~ With gas or vapor circulation for contact with treated material {3}
196  DF  .~.~.~> Recirculation of treating gas or vapor
197  DF  .~.~.~> With heater {1}
199  DF  .~.~.~> Zigzag treating gas or vapor flow

DEFINITION

Classification: 34/195

(under subclass 192) Apparatus including means to contact the material treated with a treating gas or vapor.

(1) Note. Complete the search for the subject matter provided for in this subclass in subclasses 193 and 194. Subject matter for the indented subclasses below is cross-referenced from subclasses 193 and 194.

SEE OR SEARCH CLASS

432, Heating,

162, for a heating chamber in which combustion products contact work material supported on a shelf, rack, or tray on a guide or pivot and subclass 204 for a work chamber in which heated air traverses material held on a separable tray where the air is heated by a specific combustion type heating means.