US PATENT SUBCLASS 34 / 174
.~.~.~ Foraminous distributors or walls

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

523  DF  APPARATUS {40}
165  DF  .~ Gravity flow type {7}
168  DF  .~.~ With gas or vapor flow for contact with treated material {4}
174.~.~.~ Foraminous distributors or walls

DEFINITION

Classification: 34/174

(under subclass 168) Apparatus including ducts or walls

provided with a plurality of openings for the purpose of distributing the treating gas or vapor into contact with the material treated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

168, for the subjects matter there provided for, including foraminous walls.

175, for heating by radiation and conduction plus venting means including foraminous walls.

225, and 233.

SEE OR SEARCH CLASS 454, Ventilation,

174+,.