US PATENT SUBCLASS 34 / 190
.~.~ Plural

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

523  DF  APPARATUS {40}
189  DF  .~ Elevator type {1}
190.~.~ Plural

DEFINITION

Classification: 34/190

(under subclass 189) Apparatus in which the material supports are carried in two or more elevator columns.