Issued Patents All Time
Showing 51–72 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5659292 | Apparatus including a fire sensor and a non-fire sensor | — | 1997-08-19 |
| 5612674 | High sensitivity apparatus and method with dynamic adjustment for noise | — | 1997-03-18 |
| 5557262 | Fire alarm system with different types of sensors and dynamic system parameters | — | 1996-09-17 |
| 5525962 | Communication system and method | — | 1996-06-11 |
| 5485144 | Compensated ionization sensor | Perrouz Amleshi, Hsing G. Jen, William MacPherson | 1996-01-16 |
| 5483222 | Multiple sensor apparatus and method | — | 1996-01-09 |
| 5440293 | Detector supervision apparatus and method | — | 1995-08-08 |
| D360374 | Housing for a smoke detector | Eric W. Anderson | 1995-07-18 |
| D360372 | Housing for a smoke detector | Eric W. Anderson | 1995-07-18 |
| D360373 | Housing for a smoke detector | Eric W. Anderson | 1995-07-18 |
| 5400203 | Short circuit detector and isolator | — | 1995-03-21 |
| D356050 | Housing for a smoke detector | Eric W. Anderson | 1995-03-07 |
| D355862 | Housing for a smoke detector | Eric W. Anderson | 1995-02-28 |
| 5357243 | Electrical unit with an adjustable mechanical switch for address verification | — | 1994-10-18 |
| 5254877 | Distributed power supply system | Jia Pang, Robert J. Clow | 1993-10-19 |
| D340202 | Smoke detector | Kenneth R. Fenne | 1993-10-12 |
| D340201 | Smoke detector | Kenneth R. Fenne | 1993-10-12 |
| 5172096 | Threshold determination apparatus and method | Robert J. Clow | 1992-12-15 |
| 5117219 | Smoke and fire detection system communication | Todd William Fritz, Mark A. Kilcommons | 1992-05-26 |
| 4916432 | Smoke and fire detection system communication | Todd William Fritz, Mark A. Kilcommons | 1990-04-10 |
| 4478468 | Line-gated switching power supply | Erich Schoen | 1984-10-23 |
| 4201960 | Method for automatically matching a radio frequency transmitter to an antenna | Frank Robert Skutta | 1980-05-06 |