Issued Patents 2019
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10494901 | Ball-dropping sliding sleeve with a removable ball seat | Shengpeng Zhang, Xiaojun Li, Fei Gao, Xin Zhang, Fuqiang Li | 2019-12-03 |
| 10278333 | Pruning robot system | Zhen Shen, Mengzhen Kang, Jiantong Li | 2019-05-07 |