Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11772225 | Pneumatic device | — | 2023-10-03 |
| 7565934 | Handle device for a hammer gun | Chun-Hao Chen | 2009-07-28 |
| 7413030 | Pneumatic hammer drill having vibration damping end cap | Chun-Hao Chen | 2008-08-19 |
| 7383894 | Pneumatic hammer drill (I) | Chun-Hao Chen | 2008-06-10 |