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The ornamental design for a knife sharpener, as shown. |
FIG. 1 is a perspective view of a knife sharpener, showing my new design;
FIG. 2 is a top plan view thereof;
FIG. 3 is a left side elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a bottom plan view thereof; and,
FIG. 7 is a right side elevational view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
May 31 1995 | Rhino Industries, Inc. | (assignment on the face of the patent) | / |
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