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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 thereof;
FIG. 2 is a left side elevational view thereof, the right side elevation being a mirror image thereof;
FIG. 3 is a front elevational view thereof;
FIG. 4 is a rear elevational view thereof;
FIG. 5 is a top plan view thereof; and,
FIG. 6 is a bottom plan view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Aug 31 1994 | SMITH, RICHARD S | Smith Abrasives, Inc | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 007160 | /0852 | |
| Sep 06 1994 | Smith Abrasives, Inc. | (assignment on the face of the patent) | / |
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