US PATENT SUBCLASS 209 / 570
.~.~.~ Permeability

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

509  DF  SORTING SPECIAL ITEMS, AND CERTAIN METHODS AND APPARATUS (E.G., POCKET TYPE AND LIGHT RESPONSIVE SORTING, ETC.) FOR SORTING ANY ITEMS {11}
552  DF  .~ Condition responsive means controls separating means {13}
567  DF  .~.~ Magnetic test sensing property of item {3}
570.~.~.~ Permeability

DEFINITION

Classification: 209/570

Permeability:

(under subclass 567) Methods and apparatus wherein the permeability of an item is sensed.