Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9855635 | Cylindrical-component grinding device, and workpiece advancing apparatus and grinding method thereof | Chengzu REN, Xiaofan Deng, Yinglun He, Xinmin JIN | 2018-01-02 |
| 9839987 | Double-disc straight groove cylindrical-component surface grinding disc | Chengzu REN, Xiaofan Deng, Yinglun He, Xinmin JIN | 2017-12-12 |
| 8481200 | Battery cover | Zhan-Shi Ren | 2013-07-09 |