Issued Patents 2021
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11087636 | Lights-guided piano learning and teaching apparatus, and method | Xingxin Liu, Yuezhang Wang | 2021-08-10 |
| 11079216 | Chain intelligent pre-tensioning and chain length detection method and device thereof | Jiguang Lu, Lili Wang, Hongjun Wang, Jiancong Zhang, Bin Sun +1 more | 2021-08-03 |