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The ornamental design for a drill sharpener, as shown and described. |
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FIG. 1 is a right side elevational view of a drill sharpener showing my new design;
FIG. 2 is a left side elevational view;
FIG. 3 is a front elevational view;
FIG. 4 is a rear elevational view;
FIG. 5 is a top plan view;
FIG. 6 is a bottom plan view; and
FIG. 7 is a top, front and right side perspective view thereof.
| Patent | Priority | Assignee | Title |
| D568132, | Sep 13 2006 | Choon Nang Electrical Appliance Mfy., Ltd | Sharpener for drill bits |
| Patent | Priority | Assignee | Title |
| 3911629, | |||
| 4485596, | Sep 09 1982 | Darex Corporation | Twist drill point splitting/web thinning apparatus |
| 4703588, | Dec 19 1984 | Drill cutting edge grinder | |
| 4742648, | Nov 21 1984 | Drill sharpening tool | |
| 4916867, | Dec 19 1988 | Drill bit sharpener | |
| D311027, | Nov 12 1986 | John Manufacturing Limited | Combined pencil sharpener and holder for writing instruments |
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