US PATENT SUBCLASS 131 / 296
.~.~ By contact with hot gaseous medium

Current as of: June, 1999
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131 /   HD   TOBACCO

290  DF  TOBACCO TREATMENT {8}
291  DF  .~ Puffing {5}
296.~.~ By contact with hot gaseous medium

DEFINITION

Classification: 131/296

By contact with hot gaseous medium:

(under subclass 291) Process or apparatus wherein the puffing is accomplished by contacting the tobacco with a hot gas.