US PATENT SUBCLASS 34 / 234
.~.~.~ Caused by heater 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}
218  DF  .~.~ With gas or vapor circulation for contact with treated material {8}
234.~.~.~ Caused by heater only

DEFINITION

Classification: 34/234

(under subclass 218) Apparatus in which the flow of treating gas or vapor into contact with the material is caused by the heater alone.

SEE OR SEARCH THIS CLASS, SUBCLASS:

73, 74, 75, 197, and 198.

220, for recirculation caused by heater action, and search notes thereto.

235, where the heater causes the evolved gases or vapors to vent.