US PATENT SUBCLASS 34 / 132
.~.~.~ With heating means

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

523  DF  APPARATUS {40}
108  DF  .~ Rotary drums or receptacles {7}
130  DF  .~.~ With gas or vapor flow for contact with treated material {5}
132.~.~.~ With heating means {2}
595  DF  .~.~.~.~> With drum or receptacle enclosing housing {9}
134  DF  .~.~.~.~> Heat exchange and/or gas or vapor conducting conduits in drum or receptacle

DEFINITION

Classification: 34/132

(under subclass 130) Apparatus including heating means for either, or both, (1) the treating gas or vapor, or (2) the material undergoing treatment.

(1) Note. Such means may include gas or vapor conducting conduits which act to heat as well as conduct gases and/or vapors into the apparatus, for which see this class, subclass 134 and notes.

SEE OR SEARCH THIS CLASS, SUBCLASS:

131, for the subject matter provided for in this subclass, plus recirculation of the treating gas or vapor.