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The ornamental design of a drill sharpening device, as shown and described. |
FIG. 1 is a perspective view of the drill sharpening device;
FIG. 2 is a front elevation view of the drill sharpening device;
FIG. 3 is a left side elevation view of the drill sharpening device;
FIG. 4 is a rear elevation view of the drill sharpening device;
FIG. 5 is a right side elevation view of the drill sharpening device;
FIG. 6 is a top plan view of the drill sharpening device; and,
FIG. 7 is a bottom plan view of the drill sharpening device.
Patent | Priority | Assignee | Title |
D969889, | Dec 13 2019 | TECOMEC S.R.L. | Sharpening machine |
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2109308, | |||
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4093247, | Jul 09 1975 | Darex Corporation | Chuck |
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4485596, | Sep 09 1982 | Darex Corporation | Twist drill point splitting/web thinning apparatus |
4916866, | Feb 09 1989 | Darex Corporation | End mill sharpener |
5097634, | Dec 08 1989 | Tool grinder apparatus and method | |
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230045, |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Jul 10 1996 | Darex Corporation | (assignment on the face of the patent) | / | |||
Oct 15 1996 | BERNARD, DAVID A | Darex Corporation | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 008192 | /0346 | |
Jan 27 1998 | Darex Corporation | BERNARD, DAVID A | CORRECTIVE ASSIGNMENT TO CORRECT STREET ADDRESS OF RECEIVING PARTY, PREVIOUSLY RECORDED AT REEL 9005, FRAME 0083 | 009396 | /0359 | |
Jan 27 1998 | Darex Corporation | BERNARD, DAVID A | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 009005 | /0083 |
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