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The ornamental design for a photography background frame, as shown and described.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jan 06 2021 | TIAN, GAOSHENG | SHAOXING SHANGYU SHENGHUI PHOTOGRAPHIC EQUIPMENT CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 054851 | /0822 | |
| Jan 08 2021 | SHAOXING SHANGYU SHENGHUI PHOTOGRAPHIC EQUIPMENT CO., LTD. | (assignment on the face of the patent) | / |
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