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The ornamental design for a usb ac adapter, as shown and described.
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The broken lines in the drawings illustrate portions of the USB AC adapter that form no part of the claimed design.
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jun 16 2018 | Shenzhen Lepower Electronic Co., Ltd. | (assignment on the face of the patent) | / | |||
| Jun 16 2018 | XU, HONGFA | SHENZHEN LEPOWER ELECTRONIC CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 046110 | /0418 |
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