Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9617808 | Continuous oil pipe clamp mechanism | Dong Liu, Qingfeng Yu | 2017-04-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9617808 | Continuous oil pipe clamp mechanism | Dong Liu, Qingfeng Yu | 2017-04-11 |