Inventor
STOCKDALE ROY
14 patents
⚠️ This page may combine multiple inventors who share the name “STOCKDALE ROY”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NAPCO SECURITY SYSTEMS INC
12 patentsUS4622541ANov 11, 1986
Intrusion detection system
NAPCO SECURITY SYSTEMS INC44 citations92
US4137429AJan 30, 1979
Digital dialers for use in the security field
NAPCO SECURITY SYSTEMS INC56 citations92
USD251485SApr 3, 1979
Pulse code transmitter or similar article
NAPCO SECURITY SYSTEMS INC17 citations81
US4100543AJul 11, 1978
Audible alarm apparatus particularly adaptable for use with fire and theft security systems
NAPCO SECURITY SYSTEMS INC22 citations81
US4003045AJan 11, 1977
Intrusion detection systems with turbulence discrimination
NAPCO SECURITY SYSTEMS INC29 citations81
US4361740ANov 30, 1982
Seismic sensor apparatus
NAPCO SECURITY SYSTEMS INC7 citations73
USD257723SDec 30, 1980
Cover plate for a control panel circuit board
NAPCO SECURITY SYSTEMS INC8 citations73
US4156235AMay 22, 1979
Apparatus for activating or deactivating an intrusion detection system from a plurality of remote locations
NAPCO SECURITY SYSTEMS INC8 citations73
US4145581AMar 20, 1979
Automatic telephone dialer for use in intrusion detection systems
NAPCO SECURITY SYSTEMS INC19 citations73
US4074248AFeb 14, 1978
Dual operating control circuits for intrusion detection systems
NAPCO SECURITY SYSTEMS INC18 citations73
US4064509ADec 20, 1977
Intrusion detection systems employing automatic sensitivity adjustments
NAPCO SECURITY SYSTEMS INC15 citations73
US4164736AAug 14, 1979
Apparatus for disabling an alarm after a predetermined operating period
NAPCO SECURITY SYSTEMS INC1 citations51