US PATENT SUBCLASS 34 / 492
.~.~.~ Gas or vapor flow varied during treatment

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}
487  DF  .~.~ Gas or vapor flow directing or control {3}
492.~.~.~ Gas or vapor flow varied during treatment

DEFINITION

Classification: 34/492

Gas or vapor flow varied during treatment:

(under subclass 487) Process wherein the amount of gas or vapor applied to the treated material is changed during the treating process.