US PATENT SUBCLASS 131 / 292
.~.~ Including freeze drying

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


131 /   HD   TOBACCO

290  DF  TOBACCO TREATMENT {8}
291  DF  .~ Puffing {5}
292.~.~ Including freeze drying

DEFINITION

Classification: 131/292

Including freeze drying:

(under subclass 291) Process or apparatus including the step of drying the tobacco in a frozen state under high vacuum.

SEE OR SEARCH CLASS

34, Drying and Gas or Vapor Contact With Solids,

245+, for drying by subjecting material to electrical energy; and subclasses 266+ and 519+ for the use of radiant energy in drying.

99, Foods and Beverages: Apparatus,

451, for treating of food with radiant energy.