Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9765942 | LED lamp and optical lens | Sheng-Lung Tsai, Jenn-Yuan Hsu, Hsin-Yu Chiang | 2017-09-19 |
| 6726393 | Connecting device for connecting a tool with tool bits of different lengths | Sheng-Chung Tsai | 2004-04-27 |