Drill bit sharpening attachment

Details Drill bit sharpening attachment Drill bit sharpening attachment

1993-11-23

1995-03-21

Ansher, Bernard

Tools and hardware

Other tools and implements

Abrading

D 8 51, D 8 71, D15126

Patent

active

D03564835

REFERENCES:
patent: D151792 (1948-11-01), Smith
patent: 2730849 (1956-01-01), Novak
patent: 3374587 (1968-03-01), Simpkins
patent: 3626645 (1971-12-01), Rochet
patent: 4142332 (1979-03-01), Clarke
patent: 4176499 (1979-12-01), Mazoff
patent: 4270315 (1981-06-01), Reiling et al.
patent: 4547999 (1985-10-01), Reiling et al.
patent: 4566227 (1986-01-01), Wolff
patent: 4744178 (1988-05-01), Afshar
patent: 4974372 (1990-12-01), Chantalat

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