Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10385692 | Apparatus and method for pre-loading mechanical constant-resistance single prop | Qiang Zhang, Yanlong Chen, Kai Quan, Hao Yan | 2019-08-20 |
| 10352167 | Process method for withdrawing and recovering mechanical constant-resistance single prop | Nan Zhou, Wenyue Qi, Qiang Zhang, Meng Li | 2019-07-16 |
| 10301939 | Method for designing supporting parameters of transition support for mixed mining face of filling and fully-mechanized mining | Jianguo Zhang, Qiang Zhang, Qiang Sun, Wei Hong Yin, Weiqing Zhang +1 more | 2019-05-28 |