Sharpener for drill bits

Details Sharpener for drill bits Sharpener for drill bits

2008-05-06

2008-05-06

Hyder, Philip S. (Department: 2915)

Bleaching and dyeing; fluid treatment and chemical modification

Treatment of hides, skins, feathers and animal tissues

Tanning

Design Patent

active

D0568132

CLAIM:
The ornamental design for a sharpener for drill bits, as shown and described.

REFERENCES:
patent: 3769757 (1973-11-01), Sunday, Jr.
patent: 4016680 (1977-04-01), Moores et al.
patent: 4031672 (1977-06-01), Moores et al.
patent: 4742648 (1988-05-01), Ketteringham
patent: 4974372 (1990-12-01), Chantalat
patent: D324224 (1992-02-01), Chien
patent: 5311703 (1994-05-01), Ketteringham
patent: D356483 (1995-03-01), Fultz et al.
patent: 5400546 (1995-03-01), Christian et al.
patent: 5735732 (1998-04-01), Bernard
patent: 6626745 (2003-09-01), Bernard
patent: 7121932 (2006-10-01), Liao
patent: 7172498 (2007-02-01), Bernard et al.
1 sheet printout from google image search for drill bit sharpener.

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