US PATENT SUBCLASS 34 / 309
.~.~ Shielding by selective application of gas or vapor flow

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

282  DF  PROCESS {24}
307  DF  .~ Retarding or shielding of treatment {4}
309.~.~ Shielding by selective application of gas or vapor flow

DEFINITION

Classification: 34/309

Shielding by selective application of gas or vapor flow:

(under subclass 307) Process wherein the treating gas or vapor is directed to particular areas on the treated material by altering the velocity or direction of flow of the treating

gas or vapor from its source, which results in differential exposure by the treating gas or vapor.