US PATENT SUBCLASS 131 / 295
.~.~ By high frequency field

Current as of: June, 1999
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131 /   HD   TOBACCO

290  DF  TOBACCO TREATMENT {8}
291  DF  .~ Puffing {5}
295.~.~ By high frequency field

DEFINITION

Classification: 131/295

By high frequency field:

(under subclass 291) Process or apparatus wherein puffing is accomplished by induction or dielectric heating.

SEE OR SEARCH CLASS

219, Electric Heating,

600+, for inductive heating, subclasses 678+ for microwave heating, and subclasses 764+ for capacitive dielectric heating.