US PATENT SUBCLASS 209 / 128
.~ Attracting and repelling

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

127.1  DF  ELECTROSTATIC {7}
128.~ Attracting and repelling

DEFINITION

Classification: 209/128

(under subclass 127.1) Methods and means which involve the attraction of material toward a charged electrode followed by repulsion from the electrode, the material being assorted according to its response to the repellant forces.