Inventor
KELLER HANSJURG
6 patents
Patents
6 patentsUS4179691ADec 18, 1979
Infrared intrusion detector circuit
CERBERUS AG65 citations94
US4087688AMay 2, 1978
Infrared radiation-burglary detector
CERBERUS AG51 citations91
US4081680AMar 28, 1978
Infrared radiation-burglary detector
CERBERUS AG52 citations91
US4166955ASep 4, 1979
Radiation detector and method of operating the same
CERBERUS AG27 citations80
US4052616AOct 4, 1977
Infrared radiation-burglary detector
CERBERUS AG29 citations80
US4058726ANov 15, 1977
Radiation detector
CERBERUS AG31 citations79