US PATENT SUBCLASS 34 / 507
.~.~ Treating gas or vapor drawn through material

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

282  DF  PROCESS {24}
443  DF  .~ Gas or vapor contact with treated material {17}
507.~.~ Treating gas or vapor drawn through material

DEFINITION

Classification: 34/507

Treating gas or vapor drawn through material:

(under subclass 443) Process wherein the treating gas or vapor flows through the treated material normally under the influence of a vacuum.