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)
07/1987
07/08/1987CN85204553U Hard-case travelling suitcase equipped with theft-guarding alarm
07/07/1987US4679077 Visual Image sensor system
07/07/1987US4679035 Tri-signal electromagnetic article surveillance system
07/07/1987US4679034 Infrared intrusion sensor with preliminary and primary alarms
07/07/1987US4679031 Device to facilitate the arming of an alarm system and to provide lock-out protection
07/02/1987WO1987003985A1 Improvements relating to alarm systems
07/02/1987WO1987003984A1 Anti-theft device for flat objects
07/02/1987DE3545233A1 Anti-theft device for a car radio
07/01/1987EP0227484A2 Electrical apparatus for in-car entertainment
07/01/1987EP0226812A2 Security label for theft security system capable of deactivation
07/01/1987EP0226694A2 Method and arrangement for monitoring a space
06/1987
06/30/1987US4677424 Window sill burglar alarm
06/30/1987US4676485 Intrusion warning wire fence
06/24/1987EP0226402A2 Wireless synchronization system for electronic article surveillance system
06/24/1987EP0226239A1 Electromagnetic detection system of high sensitivity
06/23/1987US4675658 System including tuned AC magnetic field transmit antenna and untuned AC magnetic field receive antenna
06/23/1987US4675657 Electromagnetic surveillance system with improved signal processing
06/19/1987DE3642566A1 Alarm device for two-dimensional objects
06/19/1987DE3544073A1 Device for emitting a signal
06/19/1987DE3153076C2 Mounting profile strip for the light emitter and/or light receiver of an alarm system having at least one light barrier
06/18/1987WO1987003726A1 Calling system for co-ordinated interventions
06/18/1987WO1987003725A1 Security, deterrent and assistance device intended to be fitted on furniture and property objects susceptible of being stolen, violated or in need of assistance
06/16/1987US4673974 Image transmission system
06/16/1987US4673935 Instrusion detection system
06/16/1987US4673923 Article surveillance using reactivatable resonant tags
06/16/1987CA1222873A1 Electronic switch
06/11/1987DE3630709A1 Compact remote transmitter for motion, smoke and temperature data
06/10/1987EP0224595A1 Pyroelectric infrared sensor
06/09/1987US4672206 Passive infrared detector
06/09/1987CA1222791A1 Lighting control system and method
06/04/1987WO1987003403A1 Electro-magnetic lock
06/03/1987EP0224253A2 Method of extracting an image of a moving object
06/02/1987US4670740 Portable, batteryless, frequency divider consisting of inductor and diode
06/02/1987US4670655 Alarm apparatus for spatial surveillance
05/1987
05/26/1987USRE32428 Amorphous antipilferage marker
05/26/1987USRE32427 Amorphous antipilferage marker
05/26/1987US4668942 Signal analysis apparatus including recursive filter for electromagnetic surveillance system
05/26/1987US4668941 Method and apparatus for discriminating sounds due to the breakage or glass
05/21/1987DE3540680A1 Passive infrared movement receiver
05/21/1987DE3540675A1 Alarm system which responds to variation in air pressure in closed rooms
05/20/1987EP0222194A1 Trigger/untrigger switching device for an intrusion alarm system
05/19/1987US4667188 Portable alarm
05/19/1987US4667185 Wireless synchronization system for electronic article surveillance system
05/19/1987US4667183 Keyboard hold-down functions for a multi-zone intrusion detection system
05/19/1987CA1222036A1 Theft detection system target fastener
05/13/1987EP0221631A2 Methods and apparatus for monitoring events
05/12/1987US4665397 Apparatus and method for a universal electronic locking system
05/12/1987US4665387 Method and apparatus for target deactivation and reactivation in article surveillance systems
05/07/1987WO1987002811A1 Portable, batteryless, frequency divider consisting of inductor and diode
05/07/1987DE3539024A1 Switch
05/07/1987DE3538592A1 Passive infrared receiver
05/06/1987EP0220511A2 Circuit arrangement for an infrared space surveillance detector
05/06/1987EP0220361A2 Surface protection
05/05/1987US4663625 Passive tag identification system and method
05/05/1987US4663612 Pattern-comparing security tag detection system
05/05/1987US4663611 Alarm lock
05/05/1987US4663521 Infrared radiation controlled switch with a visible light detector
05/05/1987CA1221435A1 Object detecting apparatus including photosensors for restricted detection area
04/1987
04/29/1987EP0219954A1 An infra-red detector system
04/29/1987EP0219711A1 Infrared detector
04/29/1987EP0219618A1 Surveillance system including transmitter and receiver synchronized by power line zero crossings
04/29/1987CN85205049U Multi-functional induction alarm device
04/28/1987US4661939 Light vehicle range discriminator
04/28/1987US4661805 Device for indicating the movement and/or position of a shutoff means
04/22/1987EP0219466A2 Improved apparatus for indicating the passage of an intruder across the boundary of a predetermined region
04/22/1987EP0218765A1 Detection and alarm system
04/21/1987US4660086 Scanning apparatus and method
04/21/1987US4660025 Article surveillance magnetic marker having an hysteresis loop with large Barkhausen discontinuities
04/21/1987US4660024 Dual technology intruder detection system
04/21/1987US4659922 Optical sensor device for detecting the presence of an object
04/15/1987EP0218428A2 Resonant marker for use with radio frequency electronic article surveillance system
04/15/1987EP0218341A1 Alarm for a blind
04/15/1987EP0218281A1 Anti-theft security system for electrical appliances, and wall plug for such a system
04/15/1987EP0218057A1 Pyroelectric detector for detecting a body intruding in its detection field
04/15/1987EP0218056A1 Pyrodetector for the detection of a body intruding its detection field
04/15/1987EP0218055A1 Infrared movement detector
04/15/1987EP0218011A1 Infrared intrusion detector circuit
04/14/1987US4658264 Folded RF marker for electronic article surveillance systems
04/14/1987US4658263 Dual antenna for magnetic markers
04/14/1987US4658242 Impedance sensing anti-theft device
04/14/1987US4658241 Surveillance system including transmitter and receiver synchronized by power line zero crossings
04/14/1987CA1220553A1 Flexible ferromagnetic marker for the detection of objects having markers secured thereto
04/08/1987EP0217592A1 Tamper-resistant supervisory system
04/08/1987EP0216893A1 Device for indicating a pressure or force
04/07/1987US4656478 Passive transponder for locating avalanche victims
04/07/1987US4656463 Monitoring and control system
04/07/1987US4656462 Object detecting apparatus including photosensors for restricted detection area
04/07/1987US4656458 Motion sensor
04/02/1987DE3535222A1 Burglary alarm
04/02/1987DE3534806A1 Alarm system
04/02/1987DE3534277A1 Apparatus and method for the purpose of monitoring rooms and buildings with the aid of infrasound
04/01/1987EP0216584A2 Frequency-dividing transponder and use thereof in a presence detection system
04/01/1987EP0216136A2 Arrangement of sensor elements in a supporting frame for a pyrodetector, and method for its realization
04/01/1987EP0216128A1 Synchronous detector
04/01/1987CN86203942U Highly sensitive coding electronic alarm device
03/1987
03/31/1987US4654703 Video camera surveillance system
03/31/1987US4654641 Frequency divider with single resonant circuit and use thereof as a transponder in a presence detection system
03/31/1987US4654640 Digital PBX integrated workstation security system
03/31/1987CA1219948A1 Shielded, closely spaced transmit-receiver antennas for electronic article surveillance system
03/31/1987CA1219932A1 Variable frequency rf electronic surveillance system
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