Frederick J. Schuler

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Lakeville, MN, US

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Patents Grantslast 30 patents

Information Patent Grant
Fire detection method and apparatus using overlapping spectral bands
- Patent number 5,995,008
- Issue date Nov 30, 1999
- Detector Electronics Corporation
- John D. King
- G08 - SIGNALLING
Information Patent Grant
Dual wavelength fire detection method and apparatus
- Patent number 5,850,182
- Issue date Dec 15, 1998
- Detector Electronics Corporation
- Fred Schuler
- G08 - SIGNALLING
Information Patent Grant
Fire detector having wide-range sensitivity
- Patent number 5,804,825
- Issue date Sep 8, 1998
- Detector Electronics Corporation
- Frederick J. Schuler
- G08 - SIGNALLING