Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11786979 | Strength-boosting drill chuck | Wenhua Zhou | 2023-10-17 |
| 11458547 | Self-locking drill chuck | Wenhua Zhou, Yungui Wu | 2022-10-04 |
| 10166609 | Self-locking drill chuck | Wenhua Zhou, Yanxing XU | 2019-01-01 |