Issued Patents 2022
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11506041 | Drilling-slitting-sealing-fracturing device and method for a deep low-permeability gassy coal seam | Gang Wang, Zhiyuan Liu, Weimin Cheng, Xiangjie Qin, Jiuyuan Fan +5 more | 2022-11-22 |