Issued Patents 2017
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9714891 | Rock fixing device with hydraulic-spring combination and position-limiting chuck for direct tensile test | Jianfeng Liu, Heping Xie, Yang Ju, Huining Xu, Yangmengdi Xu +3 more | 2017-07-25 |