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The ornamental design for a knife sharpener, as shown and described. |
FIG. 1 is a top and left-front perspective view of a knife sharpener showing my new design;
FIG. 2 is a top plan view;
FIG. 3 is a front elevational view;
FIG. 4 is a rear elevational view;
FIG. 5 is a right-side elevational view of the opposition side being a mirror image; and,
FIG. 6 is a bottom plan view thereof.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Sep 25 1989 | Plastics Northwest, Inc. | (assignment on the face of the patent) | / | |||
Sep 25 1989 | MARTIN, MICHAEL W | PLASTICS NORTHWEST, INC , 8937 S E JANNSEN ROAD, CLACKAMAS, OR 97015, AN OR CORP | ASSIGNMENT OF ASSIGNORS INTEREST | 005143 | /0155 |
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