Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10272499 | Self-locking drill chuck | Wenhua Zhou | 2019-04-30 |
| 10166609 | Self-locking drill chuck | Wenhua Zhou, Xuebiao Tong | 2019-01-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10272499 | Self-locking drill chuck | Wenhua Zhou | 2019-04-30 |
| 10166609 | Self-locking drill chuck | Wenhua Zhou, Xuebiao Tong | 2019-01-01 |