Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6390699 | Keyboard with moveable base plate providing key travel | — | 2002-05-21 |
| 5457453 | Folding keyboard | Wilson L. Chiu | 1995-10-10 |
| 4383253 | Ionization smoke detector | Thomas K. P. Lee | 1983-05-10 |
| 4287513 | Door knob alarm device | Thomas K. P. Lee, Y. Cheng | 1981-09-01 |
| 4258358 | Door opening sensing and alarm producing device | Thomas K. P. Lee | 1981-03-24 |