Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8714892 | Spindle head structure rotatable in A/B axes | Xiaoqiang Tang, Liping Wang, Zhufeng Shao, Rui Yao, Lin Qu | 2014-05-06 |
| 6116800 | Propelling pencil | Guoyue Wang, Guofeng Wang | 2000-09-12 |