US PATENT SUBCLASS 34 / 496
.~.~.~ Multiple temperature levels of gas or vapor

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}
493  DF  .~.~ Temperature of treating gas or vapor controlled {3}
496.~.~.~ Multiple temperature levels of gas or vapor

DEFINITION

Classification: 34/496

Multiple temperature levels of gas or vapor:

(under subclass 493) Process wherein the treating gas or vapor is maintained at several constant temperature levels during treatment.