US PATENT SUBCLASS 408 / 217
.~.~ Including cutting teeth of different width

Current as of: June, 1999
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408 /   HD   CUTTING BY USE OF ROTATING AXIALLY MOVING TOOL

199  DF  TOOL OR TOOL WITH SUPPORT {12}
215  DF  .~ With pitch-stabilizing ridge {4}
217.~.~ Including cutting teeth of different width {1}
218  DF  .~.~.~> And different root circles

DEFINITION

Classification: 408/217

(under subclass 215) Device having a plurality of cutting extremities adapted to follow one another in a common kerf wherein a subsequently acting extremity serves to make the kerf broader at a given level in the work than a previously acting extremity.