Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9562831 | Rotary wheel airtightness detecting machine | Xue Bowen, Guo Jiandong, Ren Yanchao, Liu Weidong, Zhu Zhihua +1 more | 2017-02-07 |
| 9470613 | Apparatus for detecting spring stiffness | Lyu Jinqi, Sun Hanbao, Tang Debin, Liu Chunhai, Zhu Zhihua +1 more | 2016-10-18 |