US PATENT SUBCLASS 451 / 447
.~.~ Grader

Current as of: June, 1999
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451 /   HD   ABRADING

442  DF  ACCESSORY {10}
446  DF  .~ Abradant supplying {1}
447.~.~ Grader

DEFINITION

Classification: 451/447

Grader:

(under subclass 446) Abradant supplying accessory including means for sorting used abradant into portions of differing fineness and returning that which is suitable for reuse.

SEE OR SEARCH CLASS

209, Classifying, Separating, and Assorting Solids, particularly

155+, for liquid suspension type.