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The ornamental design for a ballpoint pen, as shown and described.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Nov 12 2009 | SHIBATA, TOMOAKI | Pentel Kabushiki Kaisha | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 023624 | /0252 | |
Nov 30 2009 | Pentel Kabushiki Kaisha | (assignment on the face of the patent) | / |
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