Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7075444 | Temporary alarm locate with intermittent warning | — | 2006-07-11 |
| 7030748 | Enhanced visual signaling for an adverse condition detector | — | 2006-04-18 |
| 6914534 | Enhanced visual signaling for an adverse condition detector | — | 2005-07-05 |
| 6836210 | Adverse condition detector having modulated test signal | — | 2004-12-28 |
| 6747375 | Time controls with enhanced timing range | — | 2004-06-08 |
| 6646566 | Enhanced visual and audible signaling for sensed alarm condition | — | 2003-11-11 |
| 6614347 | Apparatus and method for providing alarm synchronization among multiple alarm devices | — | 2003-09-02 |
| 6362743 | Smoke alarm with dual sensing technologies and dual power sources | Thomas W. Kondziolka | 2002-03-26 |
| 6351219 | Photoelectric smoke detector | Thomas W. Kondziolka | 2002-02-26 |
| 6348871 | Adverse condition detection and notification apparatus | Thomas W. Kondziolka, Brian J. Althoff | 2002-02-19 |
| 6288638 | Heat detector having an increased accuracy alarm temperature threshold and improved low temperature testing capabilities | Keith Corsello | 2001-09-11 |
| 5969600 | Dangerous condition warning device incorporating a time-limited hush mode of operation to defeat an audible low battery warning signal | — | 1999-10-19 |
| 5966079 | Visual indicator for identifying which of a plurality of dangerous condition warning devices has issued an audible low battery warning signal | — | 1999-10-12 |
| 5966078 | Battery saving circuit for a dangerous condition warning device | — | 1999-10-12 |
| 5886638 | Method and apparatus for testing a carbon monoxide sensor | — | 1999-03-23 |
| RE33920 | Smoke detector having variable level sensitivity | James McCrink | 1992-05-12 |
| 4965556 | Combustion products detector having self-actuated periodic testing signal | James Brodecki, Dale Fiene | 1990-10-23 |
| 4792797 | Smoke detector having variable level sensitivity | James McCrink | 1988-12-20 |