US PATENT SUBCLASS 451 / 321
.~.~.~.~ Blade sharpener

Current as of: June, 1999
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451 /   HD   ABRADING

64  DF  MACHINE {12}
312  DF  .~ Stationary tool {2}
319  DF  .~.~ Rigid {2}
320  DF  .~.~.~ Reciprocating work holder {2}
321.~.~.~.~ Blade sharpener {1}
322  DF  .~.~.~.~.~> Blade reversing

DEFINITION

Classification: 451/321

Blade sharpener:

(under subclass 320) Abrading machine especially adapted to sharpen the edge of a cutting member.

(1) Note. Sharpening of a razor blade is included in this subclass.