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The ornamental design for a ballpoint pen, as shown and described.
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The portions of the article in broken lines are shown for illustrative purposes only and form no part of the claimed design.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
May 24 2011 | MIZOGUCHI, KUMIKO | KABUSHIKI KAISHA PILOT CORPORATION ALSO TRADING AS PILOT CORPORATION | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 026548 | /0652 | |
Jul 06 2011 | Kabushiki Kaisha Pilot Corporation | (assignment on the face of the patent) | / |
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