US PATENT SUBCLASS 451 / 190
.~.~.~.~ Opposed abrading tools

Current as of: June, 1999
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451 /   HD   ABRADING

64  DF  MACHINE {12}
177  DF  .~ Rotary tool {3}
178  DF  .~.~ Rotary cylinder {11}
182  DF  .~.~.~ One-way work traverse {6}
190.~.~.~.~ Opposed abrading tools {2}
191  DF  .~.~.~.~.~> Razor blade
192  DF  .~.~.~.~.~> Blade sharpener

DEFINITION

Classification: 451/190

Opposed abrading tools:

(under subclass 182) Abrading machine in which a plurality of grinding tools are located on opposite or different sides of the workpiece and simultaneously or successively treat such opposite or different sides thereof.