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The ornamental design for a writing instrument, as shown and described. |
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FIG. 1 is a front elevational view of a writing instrument showing my new design;
FIG. 2 is a top plan view;
FIG. 3 is a right side elevational view;
FIG. 4 is a rear elevational view;
FIG. 5 is a bottom plan view; and
FIG. 6 is a top, right perspective view thereof.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Dec 10 1987 | OKA, SHIGEO | Pentel Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST | 004888 | /0219 | |
| Dec 22 1987 | Pentel Kabushiki Kaisha | (assignment on the face of the patent) | / |
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