US PATENT SUBCLASS 209 / 224
.~.~.~ Cylinder internal

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

*  DD  MAGNETIC {2}
213  DF  .~ Paramagnetic {9}
223.1  DF  .~.~ Stationary magnets {2}
224.~.~.~ Cylinder internal

DEFINITION

Classification: 209/224

(under subclass 223) Methods and means wherein the magnetic attracting elements are in the form of or constitute portions of stationary hollow cylinders or drums, and the material is fed into or through these cylinders or drums.