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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.
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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