US PATENT SUBCLASS 34 / 452
.~.~.~ Gas or vapor drawn through treated 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}
444  DF  .~.~ Sheet, web, or strand {7}
452.~.~.~ Gas or vapor drawn through treated material {1}
453  DF  .~.~.~.~> Using vacuum roller


DEFINITION

Classification: 34/452

Gas or vapor drawn through treated material:

(under subclass 444) Process wherein the treating gas or vapor is pulled from one side of the material to the other side of the material.