Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9631450 | Surface layer conductor running tool for deep-water well drilling | Baojiang Sun, Ning Zhang, Hao Li, Yonghai Gao, Guomin Yan +1 more | 2017-04-25 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9631450 | Surface layer conductor running tool for deep-water well drilling | Baojiang Sun, Ning Zhang, Hao Li, Yonghai Gao, Guomin Yan +1 more | 2017-04-25 |