Bernhard Durrer

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Stafa, CH

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Patents Grantslast 30 patents

Information Patent Grant
Automatic surveillance device
- Patent number 5,939,994
- Issue date Aug 17, 1999
- Cerberus A.G.
- Otto Meier
- G08 - SIGNALLING
Information Patent Grant
Fire alarm
- Patent number 5,568,133
- Issue date Oct 22, 1996
- Cerberus AG
- Bernhard Durrer
- G08 - SIGNALLING
Information Patent Grant
Electrode insulating member for ionization fire alarm
- Patent number 4,582,996
- Issue date Apr 15, 1986
- Cerberus AG
- Andreas Scheidweiler
- G08 - SIGNALLING
Information Patent Grant
Gas sensing unit for use in environment comprising explosive gases
- Patent number 4,352,099
- Issue date Sep 28, 1982
- Cerberus AG
- Peter Christen
- G08 - SIGNALLING
Information Patent Grant
Smoke detector ionization chamber
- Patent number 4,189,644
- Issue date Feb 19, 1980
- Cerberus AG
- Wolfgang Schubert
- G08 - SIGNALLING
Information Patent Grant
Interlocked separable fire sensor construction
- Patent number 4,074,341
- Issue date Feb 14, 1978
- Cerberus AG
- Werner Niederost
- G08 - SIGNALLING