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The ornamental design for an air purifier, as shown and described.
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The evenly broken lines in the drawings illustrate portions of the air purifier that form no part of the claim.
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Jul 07 2021 | SHENZHEN PUREMATE TECHNOLOGY CO., LTD. | (assignment on the face of the patent) | / | |||
Jul 07 2021 | YAN, YIQING | SHENZHEN PUREMATE TECHNOLOGY CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 056774 | /0560 |
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