US PATENT SUBCLASS 209 / 40
.~ Magnetic and stratifying

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

12.1  DF  PLURAL, DIVERSE SEPARATING OPERATIONS {17}
40.~ Magnetic and stratifying

DEFINITION

Classification: 209/40

(under subclass 12.1) Apparatus and methods by which there is separation both by stratification and by magnetic separation.

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478, for such processes and apparatus as employ magnetic separation merely as an aid to stratification by subjecting the material to magnetic attraction while being stratified to give the magnetically permeable components and apparently increased or decreased specific gravity to modify the stratification.