US PATENT SUBCLASS 34 / 128
.~.~.~ One within another (e.g., nested)

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}
127  DF  .~.~ Plural {2}
128.~.~.~ One within another (e.g., nested)

DEFINITION

Classification: 34/128

(under subclass 127) Apparatus including a plurality of drums nested one within another. The material usually passes from one drum to another in a zigzag path.