Issued Patents 2004
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6797959 | Sensitivity adjusting equipment of photoelectric smoke detector | Shenq-Tsong Chang, Ho-Lin Tsay, Bih-Chang Wang, Ting-Ming Huang | 2004-09-28 |
| 6686706 | Device having three transistors for driving light-emitting element | — | 2004-02-03 |