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The ornamental design for a pen, as shown and described.
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| Patent | Priority | Assignee | Title |
| D956869, | Nov 28 2018 | Pentel Kabushiki Kaisha | Ballpoint pen |
| ER4666, | |||
| ER6612, |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Aug 30 2019 | Beifa Group Co., Ltd. | (assignment on the face of the patent) | / | |||
| Sep 04 2019 | ZHANG, YOUBIN | BEIFA GROUP CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 050359 | /0454 |
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