US PATENT SUBCLASS 79 / 8
.~.~ Tool-sharpening

Current as of: June, 1999
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79 /   HD   BUTTON MAKING

*  DD  PEARL AND COMPOSITION {4}
7  DF  .~ Surfacing {3}
8.~.~ Tool-sharpening

DEFINITION

Classification: 79/8

Machines having tool-sharpening mechanism in combination with turning or surfacing mechanism.