US PATENT SUBCLASS 34 / 514
.~.~.~ Exhaust gas or vapor from treatment zone heats treating 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}
513  DF  .~.~ Heat conserving {1}
514.~.~.~ Exhaust gas or vapor from treatment zone heats treating gas or vapor {1}
515  DF  .~.~.~.~> Heat pump or recompression increases heating effect

DEFINITION

Classification: 34/514

Exhaust gas or vapor from treatment zone heats treating gas or vapor:

(under subclass 513) Process wherein the treating gas or vapor is heated by direct or indirect contact with dispelled gas from treating zone.