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I claim, the ornamental design for an air purifier, as shown and described.
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1. Air purifier
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Oct 30 2020 | MIDEA GROUP CO., LTD. | (assignment on the face of the patent) | / | |||
| Apr 08 2021 | CHEN, WEI | MIDEA GROUP CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 055874 | /0731 |
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