US PATENT SUBCLASS 209 / 154
.~.~ Current control

Current as of: June, 1999
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209 /   HD   CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS

132  DF  FLUID SUSPENSION {2}
133  DF  .~ Gaseous {7}
154.~.~ Current control

DEFINITION

Classification: 209/154

(under subclass 133) Methods and means for controlling the gaseous-fluid currents employed for sorting material.