US PATENT SUBCLASS 30 / 502
.~.~.~ Oppositely directed cutting edges

Current as of: June, 1999
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30 /   HD   CUTLERY

165  DF  CUTTING TOOLS {19}
166.3  DF  .~ Saw {15}
501  DF  .~.~ Having plural cutting edges {2}
502.~.~.~ Oppositely directed cutting edges

DEFINITION

Classification: 30/502

Oppositely directly cutting edges:

(under subclass 501) Device wherein one set of cutting teeth face in a direction opposite from another set of cutting teeth.