US PATENT SUBCLASS 34 / 590
.~.~.~ Serpentine path for material

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

523  DF  APPARATUS {40}
576  DF  .~ With fluid current conveying of treated material {12}
589  DF  .~.~ With plural treating zones or compartments {1}
590.~.~.~ Serpentine path for material

DEFINITION

Classification: 34/590

Serpentine path for material:

(under subclass 589) Subject matter wherein the flow path through the plural treating zones is S-shaped.