Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6691363 | Power-driven toothbrush | — | 2004-02-17 |
| 6182910 | Shower unit | — | 2001-02-06 |
| 5686813 | Mobile phone battery pack with a power-saving function | Shu Kai Lee | 1997-11-11 |
| 5397869 | Electrical switch control device | — | 1995-03-14 |