US PATENT SUBCLASS 34 / 115
.~.~.~.~.~ Through material or introduction through drum

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}
110  DF  .~.~ External {6}
113  DF  .~.~.~ Plural {5}
114  DF  .~.~.~.~ Gas or vapor circulation for contact with treated material {1}
115.~.~.~.~.~ Through material or introduction through drum

DEFINITION

Classification: 34/115

(under subclass 114) Apparatus in which the treating fluid is passed through the treated material and/or through the drum surface.