Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10260497 | Power unit of hydraulic pumping unit and corresponding hydraulic pumping unit | Zhengzhong Lei, Yongbo Chen | 2019-04-16 |
| 7121443 | Electric nailing apparatus | Ching-Yi Chen | 2006-10-17 |