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The ornamental design for a balance roller skate, as shown and described.
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1. Balance roller skate
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| Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
| Jul 23 2018 | NINEBOT (BEIJING) TECH. CO., LTD | (assignment on the face of the patent) | / | |||
| Dec 18 2018 | LIU, LEI | NINEBOT BEIJING TECH CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 049024 | /0381 | |
| Dec 18 2018 | LI, ZHIXING | NINEBOT BEIJING TECH CO , LTD | ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS | 049024 | /0381 |
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