US PATENT SUBCLASS 34 / 501
.~.~.~.~ Gas or vapor directed above and below 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}
498  DF  .~.~ With treated material motion {5}
500  DF  .~.~.~ With conveyor {2}
501.~.~.~.~ Gas or vapor directed above and below material

DEFINITION

Classification: 34/501

Gas or vapor directed above and below material:

(under subclass 500) Process wherein gas or vapor is applied to the upper and lower surfaces of the treated material.