Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D517439 | Smoke detector | Kevin Bruce Black, John Coleman, Edmond John Dougherty, Silvio P. Eberhardt, Matthew Anthony Ferris +4 more | 2006-03-21 |
| 6642849 | Hush disable feature for photoelectric smoke alarm | — | 2003-11-04 |
| 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 |
| 5578996 | Long life detector | Kalvin Watson | 1996-11-26 |