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Class Information
Number: 408/218
Name: Cutting by use of rotating axially moving tool > Tool or tool with support > With pitch-stabilizing ridge > Including cutting teeth of different width > And different root circles
Description: 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.

Patents under this class:

Patent Number Title Of Patent Date Issued
6588520 Rock drill Jul. 8, 2003
4752164 Thread cutting tools Jun. 21, 1988
4389145 Method of tapping dual thread fasteners Jun. 21, 1983
4171177 Screw thread cutting member Oct. 16, 1979

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