Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6282940 | Apparatus for testing carbon monoxide alarms | James Chan | 2001-09-04 |
| 5786768 | Clock radio gas detector apparatus and method for alerting residents to hazardous gas concentrations | James Chan | 1998-07-28 |
| 5672806 | Method and apparatus for calibrating a gas detector sensor | — | 1997-09-30 |
| D292743 | Circuit board carrier | — | 1987-11-17 |