US PATENT SUBCLASS 451 / 320
.~.~.~ Reciprocating work holder

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.~.~.~ Reciprocating work holder {2}
321  DF  .~.~.~.~> Blade sharpener {1}
323  DF  .~.~.~.~> Lens abrader

DEFINITION

Classification: 451/320

Reciprocating work holder:

Abrading machine 319 employing a relatively stationary tool of rigid character, as a hone or whetstone, and a work holder moving to and fro thereover.

SEE OR SEARCH THIS CLASS, SUBCLASS:

133, 136+, 168+, 170+, 177+, 212+, 305, and 314+, for other

reciprocating work holders.