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The ornamental design for a writing instrument, as shown and described.
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| Patent | Priority | Assignee | Title |
| D782575, | Oct 17 2015 | Shanghai Lees Manufacturing Co., Ltd. | Pen |
| D782577, | Aug 21 2015 | Shanghai Lees Manufacturing Co., Ltd. | Pen |
| D816167, | Mar 15 2016 | C JOSEF LAMY GMBH | Writing instrument |
| D826330, | May 24 2017 | Anhui-INNO-SIGN INTERNATIONAL CO. LTD | Pen with stylus |
| D839959, | Jan 04 2017 | Riteline LLC | Writing instrument |
| D839960, | Dec 06 2016 | Riteline LLC | Writing instrument |
| D853490, | Sep 19 2017 | SANFORD, L P | Pen |
| D858635, | Sep 19 2017 | SANFORD, L P | Pen |
| D886194, | Jan 23 2019 | The Berea Hardwoods Co., Inc. | Service dog pen clip |
| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Mar 27 2015 | Riteline LLC | (assignment on the face of the patent) | / | |||
| Apr 28 2015 | ZHANG, ENMIN | Riteline LLC | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 035518 | /0890 |
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