US PATENT SUBCLASS 34 / 232
.~.~.~ Plural gas or vapor inlets and/or outlets

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}
232.~.~.~ Plural gas or vapor inlets and/or outlets {1}
233  DF  .~.~.~.~> In wall, ceiling, or floor

DEFINITION

Classification: 34/232

(under subclass 218) Apparatus having two or more gas or vapor inlets and/or outlets as defined in subclass 224.

SEE OR SEARCH CLASS

454, Ventilation, particularly

173, and indented subclasses.