US PATENT SUBCLASS 451 / 437
.~.~ Internal abrader

Current as of: June, 1999
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451 /   HD   ABRADING

415  DF  ATTACHMENT {13}
435  DF  .~ To lathe {2}
437.~.~ Internal abrader

DEFINITION

Classification: 451/437

Internal abrader:

(under subclass 435) Lathe attachment especially adapted for grinding the interior of hollow work.