Issued Patents 2024
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11959346 | Method for offshore dual-drive core drilling with three layers of casings under surge compensation | Lieyu Tian, Nan Yang, Zhanzhao Li | 2024-04-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11959346 | Method for offshore dual-drive core drilling with three layers of casings under surge compensation | Lieyu Tian, Nan Yang, Zhanzhao Li | 2024-04-16 |