US PATENT SUBCLASS 34 / 651
.~.~.~.~.~.~ Plural zones or chambers

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

523  DF  APPARATUS {40}
611  DF  .~ Sheet, web, or strand {3}
618  DF  .~.~ For flexible sheet, web, or strand {6}
623  DF  .~.~.~ Running length {5}
629  DF  .~.~.~.~ With gas or vapor circulation for contact with treated material {15}
647  DF  .~.~.~.~.~ Zigzag runs of treated material {4}
651.~.~.~.~.~.~ Plural zones or chambers

DEFINITION

Classification: 34/651

Plural zones or chambers:

(under subclass 647) Subject matter wherein the material passes through more than one treating area or compartment.