Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6930586 | Carbon monoxide detector | Alfred C. C. Tseung, Darren Paul Lapham, Xuekang Shan | 2005-08-16 |
| 6885279 | Carbon monoxide detector | Alfred C. C. Tseung, Darren Paul Lapham, Xuekang Shan | 2005-04-26 |