Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11255745 | Test device for simulating longitudinal-lateral-torsional coupled nonlinear vibration of drill string of deepwater riserless drilling and method therefor | Jun Liu, Xiaoqiang Guo, Qingyou Liu, Yufa He, Anchao Wei +1 more | 2022-02-22 |