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The ornamental design for a knife sharpener, as shown and described. |
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FIG. 1 is a perspective view of a knife sharpener showing my new design;
FIG. 2 is a top plan view thereof, the bottom surface of the sharpening head being substantially flat and plain;
FIG. 3 is a rear elevational view thereof;
FIG. 4 is a front elevational view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Oct 30 1986 | KRUEGER, ROGER J | SAVANT ENGINEERING, INC , A COLORADO CORP | ASSIGNMENT OF ASSIGNORS INTEREST | 004623 | 0876 |
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