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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 article that form no part of the claim.
Zhang, Bin, Li, Puxuan, Xu, Gaohong, Hu, Qiaoyang
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Sep 27 2019 | SHENZHEN PUREMATE TECHNOLOGY CO., LTD. | (assignment on the face of the patent) | / | |||
| Sep 27 2019 | LI, PUXUAN | SHENZHEN PUREMATE TECHNOLOGY CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 050514 | /0474 | |
| Sep 27 2019 | XU, GAOHONG | SHENZHEN PUREMATE TECHNOLOGY CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 050514 | /0474 | |
| Sep 27 2019 | ZHANG, BIN | SHENZHEN PUREMATE TECHNOLOGY CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 050514 | /0474 | |
| Sep 27 2019 | HU, QIAOYANG | SHENZHEN PUREMATE TECHNOLOGY CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 050514 | /0474 |
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