| Patents for G08B 13 - Burglar, theft, or intruder alarms (42,025) |
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| 01/28/1988 | WO1988000745A1 Detection system |
| 01/26/1988 | US4721946 Door control device with alarm switch |
| 01/26/1988 | US4721945 Simulated targets for detection systems |
| 01/20/1988 | EP0253156A1 Intrusion alarm system |
| 01/19/1988 | US4720701 System with enhanced signal detection and discrimination with saturable magnetic marker |
| 01/19/1988 | US4720700 Security system and method for electronic apparatus, particularly car radios or similar automotive audio equipment |
| 01/14/1988 | WO1988000422A1 Motion detection apparatus employing information contained in the frequency spectrum of a television signal |
| 01/13/1988 | EP0252230A2 Method for controlling a motion detector |
| 01/13/1988 | EP0252071A1 A label-like device and process for its manufacture |
| 01/13/1988 | CN87204819U Ultrahigh frequency active sensibilization remote control equipment |
| 01/12/1988 | US4719604 Reflective object detector with compensated receiver signal |
| 01/12/1988 | US4719453 Card carrier having an alarm |
| 01/07/1988 | EP0251371A2 Active infrared light object detector |
| 01/07/1988 | EP0251210A1 A security system for protecting information |
| 01/07/1988 | EP0250746A2 Passive infrared motion detector |
| 01/07/1988 | EP0250520A1 Security, deterrent and assistance device intended to be fitted on furniture and property objects susceptible of being stolen, violated or in need of assistance |
| 01/07/1988 | EP0250444A1 Anti-theft device for flat objects |
| 01/07/1988 | EP0111009B1 Double-eye crime prevention sensor system |
| 01/05/1988 | US4717908 Credit card case with alarm system |
| 01/05/1988 | US4717821 For directing radiation from a plurality of acurately displaced directions |
| 01/05/1988 | US4717820 Device for detecting movable objects |
| 01/05/1988 | US4717438 Method of making tags |
| 01/05/1988 | CA1231152A1 Method and system for detecting an indicating device |
| 12/30/1987 | CN87202276U Simple pendulum type theft-proof warning device |
| 12/29/1987 | US4716401 Tamper-resistant supervisory system |
| 12/29/1987 | US4716294 Pyrodetector for the detection of a body entering into its detection area |
| 12/23/1987 | CN86201757U Automatic safe-guarding and alarming device with identification function |
| 12/16/1987 | EP0249501A2 Anti-theft apparatus and method |
| 12/16/1987 | EP0248828A1 Calling system for co-ordinated interventions |
| 12/16/1987 | CN86211018U Multi-functional electronic alarm |
| 12/16/1987 | CN86209889U Mini power consumptive infrared ray alarm |
| 12/16/1987 | CN86205962U Theft alarm attached articles |
| 12/15/1987 | US4713725 Defensive system for use against hostile elements |
| 12/15/1987 | US4713506 Electrical contact making arrangement for monitoring the condition of a screw in an installed position |
| 12/12/1987 | CN86209963U Multiplex microwave theft-proof alarm |
| 12/10/1987 | DE3618632A1 Barrier (exclusion) fence |
| 12/08/1987 | US4712103 Door lock control system |
| 12/08/1987 | US4712098 Inertia sensitive device |
| 12/08/1987 | CA1230176A1 Method of monitoring a target space |
| 12/05/1987 | CN85204714U Anti-theft handbag with a sound alarm |
| 12/03/1987 | WO1987007417A1 Alarm system |
| 12/03/1987 | DE3618416A1 Device for monitoring items of baggage or the like |
| 12/02/1987 | EP0247940A1 Surveillance arrangement using optical fibres |
| 12/02/1987 | EP0068019B1 Control device responsive to infrared radiation |
| 12/02/1987 | CN87203922U Multifunction electronic theftproof warner |
| 12/01/1987 | US4710754 Magnetic marker having switching section for use in electronic article surveillance systems |
| 12/01/1987 | US4710753 Leaky cable instrusiondetection system |
| 12/01/1987 | US4710752 Apparatus and method for detecting a magnetic marker |
| 12/01/1987 | US4710750 Fault detecting intrusion detection device |
| 12/01/1987 | US4710629 Infrared intrusion detector |
| 12/01/1987 | US4710020 Beacon proximity detection system for a vehicle |
| 12/01/1987 | CA1229896A2 Detection logic and signal processing method and apparatus for theft detection systems |
| 11/25/1987 | EP0247003A1 Security device against the theft of objects |
| 11/25/1987 | EP0246960A1 Method for proximity locating the presence of a vector such as an object, animal, person, stationary or mobile, in particular a vehicle, and location system therefor |
| 11/25/1987 | EP0246487A2 Security fence system |
| 11/25/1987 | EP0246301A1 Portable, batteryless, frequency divider consisting of inductor and diode. |
| 11/24/1987 | US4709153 Intruder detector |
| 11/24/1987 | US4709152 Infrared intrusion detector |
| 11/24/1987 | US4709151 Steerable mirror assembly and cooperative housing for a passive infrared intrusion detection system |
| 11/19/1987 | EP0246085A2 Surveillance systems |
| 11/19/1987 | EP0245842A1 Pyrodetector, especially suited for motion and direction-selective detection |
| 11/19/1987 | EP0245682A2 Control device for an electric-alarm apparatus |
| 11/19/1987 | EP0245385A1 Electro-magnetic lock |
| 11/19/1987 | DE3628816C1 Method and device for automatically checking a video signal |
| 11/19/1987 | DE3616019A1 Warning system for securing an internal space |
| 11/19/1987 | DE3615946A1 Space condition sensor |
| 11/18/1987 | CN86207070U Sound controlled alarm for defensive theft |
| 11/17/1987 | US4707735 Surveillance systems |
| 11/17/1987 | US4707604 Ceiling mountable passive infrared intrusion detection system |
| 11/11/1987 | EP0245101A2 An alarm device |
| 11/11/1987 | EP0244846A2 Photoelectric switching apparatus |
| 11/11/1987 | EP0244824A2 Security fence |
| 11/11/1987 | EP0244658A2 Car radio equipped with theft prevention means |
| 11/11/1987 | CN86206006U Sensor for detecting indoor article movement |
| 11/11/1987 | CN86201689U Small alarm using battery as power source |
| 11/10/1987 | US4706070 Outboard motor alarm system |
| 11/10/1987 | US4706069 Security system |
| 11/10/1987 | CA1229142A1 Dual velocity leaky cable intrusion detector sensor |
| 11/10/1987 | CA1229141A1 Method and apparatus for detection of targets in an interrogation zone |
| 11/09/1987 | EP0228467A4 Magnetic article surveillance system, and method using markers. |
| 11/05/1987 | WO1987006749A1 Alarm system |
| 11/05/1987 | WO1987006748A1 Remote monitoring and alarm system |
| 11/03/1987 | US4704602 Method and system for detecting an indicating device |
| 11/03/1987 | US4704533 Infrared intruder detection system |
| 10/28/1987 | EP0242901A1 An electromagnetic detection system with improved false-alarm suppression |
| 10/28/1987 | CN86206962U Burglar alarm with cipher plug seat |
| 10/28/1987 | CN86203570U Electronic burglar alarm |
| 10/27/1987 | US4703313 Picket barrier and intrusion sensing system |
| 10/27/1987 | US4703171 Lighting control system with infrared occupancy detector |
| 10/27/1987 | US4702449 Cardan ball suspension for motion sensor |
| 10/22/1987 | WO1987006294A1 Alarm device |
| 10/21/1987 | EP0242099A2 Anti-theft and locating system |
| 10/20/1987 | US4701619 Pyroelectric detectors |
| 10/20/1987 | US4701614 Fiber optic pressure sensor |
| 10/20/1987 | CA1228405A1 Antitheft device |
| 10/14/1987 | EP0240657A1 Method for monitoring a motion |
| 10/14/1987 | CN87200236U 报警仪 Alarm |
| 10/13/1987 | US4700332 Environmental interference detection device |
| 10/13/1987 | US4700179 Crossed beam high frequency anti-theft system |
| 10/13/1987 | US4700163 Removable magnetic switch security system for buildings |