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The ornamental design for a hair straightener, as shown and described.
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Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Aug 29 2021 | Nanning Sindax Electronics Co., Ltd. | (assignment on the face of the patent) | / | |||
Aug 29 2021 | LIANG, YONGCHUANG | NANNING SINDAX ELECTRONICS CO ,LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 057348 | /0610 |
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