US PATENT SUBCLASS 34 / 479
.~.~.~.~ Combusted gas or vapor recirculated to treating chamber

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}
467  DF  .~.~ Treatment of gas or vapor {6}
478  DF  .~.~.~ Combustion of gas or vapor {1}
479.~.~.~.~ Combusted gas or vapor recirculated to treating chamber

DEFINITION

Classification: 34/479

Combusted gas or vapor recirculated to treating chamber:

(under subclass 478) Process wherein the products of combustion from the burning of the treating gas or vapor are returned to the treating environment.