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The ornamental design for a writing instrument, as shown and described.
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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 | /0759 |
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