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The ornamental design for a knife sharpener, as shown and described. |
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FIG. 1 is a side elevational view of the knife sharpener showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a bottom plan view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a perspective view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Sep 23 1987 | PRINDLE, WILLIAM A | CORNING GLASS WORKS, CORNING, NEW YORK, A CORP OF | ASSIGNMENT OF ASSIGNORS INTEREST | 004791 | /0168 | |
| Sep 28 1987 | Corning Glass Works | (assignment on the face of the patent) | / | |||
| Apr 12 2001 | WORLD KITCHEN, INC | CHASE MANHATTAN BANK, THE, AS ADMINISTRATIVE AGENT | SECURITY AGREEMENT | 011675 | /0774 |
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