Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D959947 | Manually-operated grinding tool | — | 2022-08-09 |
| 6969311 | Pneumatic sanding machine | Pei-Chin Hung, Chin-Feng Liu | 2005-11-29 |
| 6184835 | Electromagnetic wave preventing cover of a mobile phone handset | Chien-Chuan Chen | 2001-02-06 |