US PATENT SUBCLASS 34 / 63
.~.~.~ Internal rotary drum drier

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

523  DF  APPARATUS {40}
60  DF  .~ For diverse operations on treated material {4}
62  DF  .~.~ With treated material cooling means {4}
63.~.~.~ Internal rotary drum drier

DEFINITION

Classification: 34/63

(under subclass 62) Apparatus including rotary drum driers of the internal type.

SEE OR SEARCH THIS CLASS, SUBCLASS:

108, and indented, subclasses for other devices of this type, including devices providing a cooling circuit for the treating gas or vapor, particularly subclass 131.