Issued Patents 2019
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10494901 | Ball-dropping sliding sleeve with a removable ball seat | Xiaojun Li, Fei Gao, Feiyue Wang, Xin Zhang, Fuqiang Li | 2019-12-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10494901 | Ball-dropping sliding sleeve with a removable ball seat | Xiaojun Li, Fei Gao, Feiyue Wang, Xin Zhang, Fuqiang Li | 2019-12-03 |