Issued Patents 2002
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6362743 | Smoke alarm with dual sensing technologies and dual power sources | William P. Tanguay | 2002-03-26 |
| 6351219 | Photoelectric smoke detector | William P. Tanguay | 2002-02-26 |
| 6348871 | Adverse condition detection and notification apparatus | William P. Tanguay, Brian J. Althoff | 2002-02-19 |