US PATENT SUBCLASS 408 / 218
.~.~.~ And different root circles

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  DF  .~.~ Including cutting teeth of different width {1}
218.~.~.~ And different root circles

DEFINITION

Classification: 408/218

(under subclass 217) Device wherein the cutting extremities are formed at the surface of the tool and are disposed along the tool-axis so that the base of one extremity is at a distance from the tool axis different from that of another extremity.