Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7011423 | Multifunction warning device | — | 2006-03-14 |
| 6899441 | Multifunction warning device | — | 2005-05-31 |
| 6236092 | Mixed mode device | Cheng-Hsiung Chen, Shen-Yuan Chou, Shih-Yin Hsiao | 2001-05-22 |