Issued Patents 2019
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10472891 | Hydraulic gentle vibration speed-enhancing drilling tool | Xiaohua Zhu | 2019-11-12 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10472891 | Hydraulic gentle vibration speed-enhancing drilling tool | Xiaohua Zhu | 2019-11-12 |