Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10822913 | Energy-gathered bundle type nesting plugging and wall reinforcing device and application thereof in karst cave plugging | Yiqun Zhang, Ya LIU, Zhongwei Huang, Huaizhong Shi, Xianzhi Song +2 more | 2020-11-03 |
| 10787886 | Auxiliary feeding device for flexible pipe of radial horizontal well | Zhongwei Huang, Jingbin LI, Jilei NIU, Zhen Cheng | 2020-09-29 |