US PATENT SUBCLASS 34 / 508
.~.~ Gas or vapor directed above and below 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}
508.~.~ Gas or vapor directed above and below treated material

DEFINITION

Classification: 34/508

Gas or vapor directed above and below treated material:

(under subclass 443) Process wherein the treating gas or vapor is directed to upper and lower surfaces of the treated material.