Patent
   D356483
Priority
Nov 23 1993
Filed
Nov 23 1993
Issued
Mar 21 1995
Expiry
Mar 21 2009
Assg.orig
Entity
unknown
2
11
n/a
The ornamental design for drill bit sharpening attachment, as shown and described.

FIG. 1 is a front, top and side perspective view of the drill bit sharpening attachment showing our new design;

FIG. 2 is a front end elevational view thereof, the rear end being a mirror image of the front shown in FIG. 2;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

Fultz, Tim, Manley, Randel D.

Patent Priority Assignee Title
8439727, Aug 06 2012 Drill bit sharpening tool
D568132, Sep 13 2006 Choon Nang Electrical Appliance Mfy., Ltd Sharpener for drill bits
Patent Priority Assignee Title
2730849,
3374587,
3626645,
4142332, Oct 03 1977 Drill grinding fixture
4176499, Dec 10 1975 Drill sharpener
4270315, Jul 29 1978 Fixture for holding a twist drill to be reground
4547999, Nov 25 1981 Device for fixing a drill to be ground
4566227, Oct 27 1983 Auxiliary device for re-grinding of spiral drills
4744178, Sep 25 1986 Institute for Industrial Research and Standards Grinding device
4974372, Apr 12 1989 Universal device for sharpening drill bits
151792,
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