Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10272499 | Self-locking drill chuck | Yanxing XU | 2019-04-30 |
| 10252347 | Self-locking drill chuck | Qirong Lu | 2019-04-09 |
| 10166609 | Self-locking drill chuck | Xuebiao Tong, Yanxing XU | 2019-01-01 |