Patents
Sitemap › G08 - Signalling › G08B - Signalling or calling systems; Order telegraphs; Alarm systems › G08B 13 - Burglar, theft, or intruder alarms
Patents for G08B 13 - Burglar, theft, or intruder alarms (42,025)
11/1981
11/10/1981US4300130 Anti-theft alarm circuit and compatible warning plugs
11/10/1981US4300129 Silent wearable signalling device with tactile means to prevent false triggering
11/10/1981US4300116 Safety method and apparatus for sensing the presence of individuals adjacent a vehicle
11/04/1981EP0039142A2 Alarm system
11/03/1981US4298862 Amorphous antipilferage marker
11/03/1981US4298792 Locking apparatus for preventing unauthorized access
11/03/1981CA1111927A1 Money clip with light sensitive detector
10/1981
10/27/1981US4297684 Fiber optic intruder alarm system
10/27/1981US4297683 Vandal alarm system for parking meters
10/27/1981US4297633 Electric fence monitoring system with energizer, responder and receiver
10/20/1981CA1111123A1 Electronic theft detection system for monitoring wide passageways
10/13/1981US4295132 Capacitance intrusion detection system
10/13/1981CA1110726A1 Detection system
10/06/1981US4293876 Television monitoring system
10/06/1981US4293860 Antenna alarm assembly for vehicle
10/06/1981US4293852 Capacitive article removal alarm
10/06/1981US4293778 Anti-theft screen construction
10/06/1981CA1110341A1 Marker tag for a detection system
09/1981
09/29/1981US4292629 Alarm system
09/22/1981US4291237 Anti-theft system for automotive vehicles
09/22/1981CA1109285A1 Capacitor and method for measuring forces by means thereof
09/16/1981EP0035692A1 Device for generating the response signal of an arrangement for automatically identifying objects and/or living beings
09/16/1981EP0035660A2 Detection of articles in adjacent passageways
09/15/1981US4290126 Ultrasonic intrusion alarm system
09/15/1981US4290058 Method and apparatus for intrusion detection by using sonic receivers
09/09/1981EP0035318A1 Improvements in electroacoustic transducers
09/08/1981US4288867 Area intrusion adjustable detector unit
09/08/1981US4288819 Multi-field imaging device
09/02/1981EP0034926A1 Supervisory assembly including a television set
09/01/1981US4287513 Door knob alarm device
09/01/1981US4287512 Magnetic locking methods and apparatus
09/01/1981US4287511 Intrusion alarm system utilizing structural moment detector as intrusion sensor and as receiver for mechanical intrusion and command signals
08/1981
08/28/1981EP0026202A4 Video monitoring system and method.
08/25/1981US4286261 Apparatus for discriminating between strain and magnetic stimuli in magnetic cored solenoid type transducer line sensors
08/25/1981CA1107835A1 Surveillance method and system with electromagnetic carrier and plural range limiting signals
08/25/1981CA1107705A1 Flashlamp assembly for providing highly intense audible and visual signals
08/19/1981EP0033857A1 Multilayered alarm glass plate
08/18/1981US4284985 Stolen equipment recovery device
08/18/1981US4284984 Attitude change alarm
08/18/1981US4284983 Appliance anti-theft and protection circuitry
08/18/1981US4284982 Battery operated personal alarm
08/18/1981US4284980 Door burglar alarm system
08/18/1981US4284888 Pyroelectric detectors
08/18/1981CA1107040A1 Monitor actuating device and reusable fastener therefor
08/12/1981EP0033661A2 A thief detection device
08/11/1981US4283718 Door alarm device
08/11/1981CA1106933A1 Body capacitance intrusion alarm apparatus
08/11/1981CA1106931A1 Timed alarming
08/06/1981WO1981002178A1 Device for burglary alarm protected doors
08/05/1981EP0033024A2 Intruder detector
08/04/1981US4282519 Interconnection of alarms of smoke detectors with distinguishable alarms
08/04/1981US4282518 Vibration responsive door alarm
08/04/1981CA1106464A1 Four wire multi-satellite intrusion alarm with multiplex annunciation
08/04/1981CA1106449A1 Vehicle operator security system
07/1981
07/29/1981EP0032593A2 Alarm, security and monitoring apparatus
07/28/1981US4281321 Surveillance system employing a floor mat radiator
07/28/1981US4281320 Combined protective barrier and burglar alarm
07/28/1981CA1106043A1 Pseudo-noise radar system
07/22/1981EP0032278A1 Ultrasonic detection system
07/22/1981EP0032169A1 Signalling arrangement operating with electromagnetic radiation
07/21/1981CA1105507A1 Apparatus for slowing-down sheets fed to a pile storage means
07/15/1981EP0032130A1 Radio frequency detector
07/14/1981US4278967 Wireless detection and warning system
07/08/1981EP0031405A2 Object protection device, especially for buildings, dwellings or the like
07/08/1981EP0031345A1 Security apparatus.
07/07/1981US4277781 Closure alarm with three-way switch
06/1981
06/30/1981US4276545 Door activated burglar alarm utilizing time delay
06/23/1981US4275391 Key controlled, position sensitive, portable alarm
06/23/1981US4275390 Burglar alarm device
06/23/1981US4275303 Passive infrared intrusion detection system
06/23/1981US4275294 Security system and strip or strand incorporating fibre-optic wave-guide means therefor
06/23/1981CA1103777A1 Back up alarm system
06/16/1981US4274090 Detection of articles in adjacent passageways
06/16/1981US4274089 Detection system
06/16/1981US4274088 Portable alarm system
06/09/1981US4272763 Security attache case with automatic alarm system
06/09/1981US4272762 Exit-entry sensing apparatus
06/09/1981CA1102900A1 Magnetic detection means
06/09/1981CA1102899A1 Method and apparatus for the promotion of selected harmonic response signals in an article detection system
06/02/1981US4271491 Intruder alarm system
06/02/1981US4271405 Alarm control system
06/02/1981US4271360 Infra-red surveillance systems using multi-faceted mirror
06/02/1981US4271359 Optical arrangement for a passive infrared motion detector
06/02/1981US4271358 Selective infrared detector
06/02/1981US4271352 Lost personal accessory return method and article
06/02/1981US4271338 Security apparatus
06/02/1981CA1102440A1 Circuit arrangement for ultrasonic burglar security systems operating in accordance with the doppler principle
06/02/1981CA1102436A1 Filter system and method for intrusion alarm
05/1981
05/26/1981US4270122 Pressure-sensitive signalling device for detecting intrusion into an enclosed area
05/26/1981US4269136 Burglar alarm
05/26/1981CA1101959A1 Bag alarm device
05/20/1981EP0028933A2 Surveillance system
05/19/1981US4268823 Protective electrical system for providing indications of removal of objects from plural monitored locations by use of parallel-connected object-sensors
05/19/1981US4268752 Optical arrangement for a passive infrared motion detector
05/13/1981EP0028471A1 Security equipment for providing indication of removal of objects from monitored locations
05/12/1981US4267553 Method and apparatus for securing attache cases
05/12/1981US4267547 Theft prevention apparatus for vehicles
05/12/1981CA1101110A1 Electronic intruder detection system
05/05/1981US4266263 Force measuring capacitor
05/05/1981US4266216 Combination portable intrusion alarm and flashlight
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