Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7770634 | Gas lift apparatus for flushing and snubbing well | Yu Lei, Yong Li, Qiang Wang, Zhenghua Wu, Zhimin Xu +1 more | 2010-08-10 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7770634 | Gas lift apparatus for flushing and snubbing well | Yu Lei, Yong Li, Qiang Wang, Zhenghua Wu, Zhimin Xu +1 more | 2010-08-10 |