Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9932784 | Device for handling oil pipes and method for workover | Zenglin Wang, Guangqi Gao, Lei Zhang, Zeng Fu, Huihui Song +6 more | 2018-04-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9932784 | Device for handling oil pipes and method for workover | Zenglin Wang, Guangqi Gao, Lei Zhang, Zeng Fu, Huihui Song +6 more | 2018-04-03 |