Inventor
HUMPHRIES PETER E
3 patents
Patents
3 patentsUS4201982AMay 6, 1980
Four wire multi-satellite intrusion alarm with multiplex annunciation
CONTRONIC CONTROLS11 citations66
US4138674AFeb 6, 1979
Four wire multi-satellite intrusion alarm control system with tamper switch
CONTRONIC CONTROLS11 citations66
US4101875AJul 18, 1978
Multi-satellite intrusion alarm control system
CONTRONIC CONTROLS3 citations55