Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7948389 | Pivoting battery carrier and a life safety device incorporating the same | Jason M. Sharpe, Larry R. Ratzlaff | 2011-05-24 |
| 7814027 | Matchmaking jewelry and method | — | 2010-10-12 |
| 7525445 | Life safety alarm with a sealed battery power supply | Jason M. Sharpe | 2009-04-28 |
| 7492273 | Pivoting battery carrier and a life safety device incorporating the same | Jason M. Sharpe, Larry R. Ratzlaff | 2009-02-17 |
| 7449990 | Communication protocol for interconnected hazardous condition detectors, and system employing same | John Andres, Michael W. Apperson, Chris R. Gilbert, Craig Kleinberg, Larry R. Ratzlaff +2 more | 2008-11-11 |
| 7268683 | Hazard detector with theft detection | John Andres, Stan Burnette, Travis Silver | 2007-09-11 |
| 7123158 | Life safety alarm with a sealed battery power supply | Jason M. Sharpe | 2006-10-17 |
| 6873254 | Multicondition detection apparatus and method providing interleaved tone and verbal warnings | John Andres, Micahel W. Apperson, Stephen M. Ernst, Chris R. Gilbert, Richard Kwor | 2005-03-29 |
| 6791453 | Communication protocol for interconnected hazardous condition detectors, and system employing same | John Andres, Michael W. Apperson, Chris R. Gilbert, Craig Kleinberg, Larry R. Ratzlaff +2 more | 2004-09-14 |
| 6753786 | Microprocessor-based combination smoke and carbon monoxide detector having intelligent hush feature | Michael W. Apperson, John Andres, Chris R. Gilbert, Larry R. Ratzlaff | 2004-06-22 |
| 6522248 | Multicondition detection apparatus and method providing interleaved tone and verbal warnings | John Andres, Micahel W. Apperson, Stephen M. Ernst, Chris R. Gilbert, Richard Kwor | 2003-02-18 |
| 6160487 | Single lockout mechanism for a multiple battery compartment that is particularly suited for smoke and carbon monoxide detector apparatus | — | 2000-12-12 |