Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9689258 | Water-preserved-mining roof-contacted filling method for controlling fissure of overlying strata and surface subsidence | Zhiyuan Jin, Xiaomin Yu, Fei Wang, Hai Sun | 2017-06-27 |