Issued Patents 2011
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D635102 | Wall switch | Philip Y. W. Tsui | 2011-03-29 |
| 7884701 | External barrier operator device | Philip Y. W. Tsui | 2011-02-08 |
| 7863777 | Low power switching circuit | Philip Y. W. Tsui | 2011-01-04 |