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)
10/1991
10/30/1991CN2087795U Infrared remote anti-theft warning device of rolling door
10/30/1991CN2087794U Theft-proof bell
10/29/1991US5061997 Control of visible conditions in a spatial environment
10/29/1991US5061941 Composite antenna for electronic article surveillance systems
10/29/1991CA1291354C Security fence
10/23/1991EP0452606A2 Pocket antitheft device for wallets and the like
10/23/1991EP0452354A1 Ultrasonic volumetric alarm system.
10/23/1991CN2087367U General type wide-angle monitor for human-bady body
10/23/1991CN2087366U Alarm guarding against theft by use of cipher
10/22/1991US5060309 Infrared detector
10/22/1991US5059951 Method and apparatus for integrated data capture and electronic article surveillance
10/22/1991US5059950 Deactivatable electronic article surveillance tags, tag webs and method of making tag webs
10/22/1991US5059949 Currency alarm pack
10/22/1991US5059948 Anti-theft security device and alarm
10/22/1991US5059796 Infrared monitoring system
10/22/1991CA1291245C Intrusion detector
10/22/1991CA1291244C Magnetic devices
10/22/1991CA1290966C Security fence system
10/17/1991DE4112064A1 Contactless inductive energy transfer system
10/16/1991EP0451812A2 Electromagnetic sensor element and method for making same
10/16/1991EP0451608A2 Electrically heated alarm glass pane
10/16/1991EP0451445A2 Contactless inductive transmission method of electrical energy and/or signals and contactless inductive transmission device
10/16/1991CN2086922U 智能报警器 Intelligent Alarm
10/15/1991US5057817 Intruder detection system with passive self-supervision
10/15/1991US5057095 Surgical implement detector utilizing a resonant marker
10/10/1991DE4011453A1 Coating for passive IR detector components - comprises hydrophilic material on one or more components in beam path to prevent water droplet formation
10/09/1991EP0450466A2 Multilayered alarm glass plate
10/09/1991EP0450063A1 An improved 360 degree field of view optical sensing device
10/09/1991EP0449827A1 Digital data processing
10/09/1991CN2086435U 报警保险盒 Alarm fuse box
10/09/1991CN2086434U Double alarm device
10/08/1991US5055827 Fiber optic security system
10/08/1991US5055685 Infrared detecting apparatus
10/08/1991US5054172 Expulsion of detrimental substance from theft-deterrent device
10/08/1991CA1290422C Taut wire intrusion detection system
10/03/1991WO1991015004A1 Arrangement for detecting variations in atmospheric pressure
10/02/1991EP0449173A2 Arrangement for signalling unauthorized removal of mobile objects
10/02/1991EP0448803A2 Video control system
10/02/1991DE4009582A1 Alarm system using electric installation of protected object - has sensor directly coupled to household installation for short circuit tripping
10/02/1991CN2085984U Balanced anti-theft alarm
10/02/1991CN2085983U Anti-theft alarm
10/01/1991US5054006 Seismic-acoustic detection device
10/01/1991US5053768 Golf cart control system
10/01/1991US5053750 Wallet guard
09/1991
09/26/1991DE4009010A1 Antitheft magnetic security strip
09/25/1991EP0448536A2 A price tag deactivator
09/25/1991EP0448290A2 Intrusion detection system and signal processing circuitry therefor
09/25/1991EP0448114A1 Thin-film magnetic material and process of production thereof
09/25/1991EP0447793A2 Security label capable of deactivation
09/25/1991CN2085541U Multifunctional sensor for anti-theft alarm
09/25/1991CN2085540U Multifunctional safety anti-theft alarm
09/25/1991CN2085539U Multifunctional anti-theft alarm for door and window
09/24/1991US5051727 Shoplifting detection system of the transmission type
09/24/1991US5051726 Electronic article surveillance system with antenna array for enhanced field falloff
09/24/1991US5051725 Security container
09/24/1991US5051724 Key security device
09/24/1991US5051723 Signalling system with ambient condition reference monitoring
09/24/1991CA1289642C Tag and method
09/24/1991CA1289641C Method of making tags
09/21/1991CA2038690A1 Price tag deactivator
09/19/1991DE4008441A1 Roller shutter with transverse slats in side guides - has current conductors on slats coupled to alarm for protection against intruder
09/19/1991DE4008014A1 Car antitheft and intruder alarm - has IR beam scanning window inner sides to detect any movement
09/18/1991EP0446910A1 Theft detection apparatus and flattened wire target and method of making same
09/18/1991EP0446875A2 Protective casings for optical devices
09/18/1991EP0446638A1 Antitheft strips capable of being deactivated
09/18/1991EP0446385A1 Ultrasonic surveillance system for intruder detection
09/18/1991CN1054680A Cipher door bell with alarm
09/18/1991CN1014004B Sensitive remote-controlled anti-theft alarm
09/17/1991US5049858 Intrusion detection system
09/17/1991US5049857 Multi-mode electronic article surveillance system
09/17/1991US5049856 Antipilferage systems
09/17/1991US5049855 Security screen system
09/17/1991US5049854 Sensing element for an alarm system
09/17/1991US5049704 Electrical conductor element
09/16/1991CA2038070A1 Protective casing for optical instruments
09/14/1991CA2037958A1 Theft detection apparatus and flattened wire target and method of making same
09/12/1991DE4007298A1 Monitoring installation for safety fence with tensioned wires - has electromechanical transducer with electronic oscillation circuit of variable frequency
09/11/1991EP0445531A1 Supervision device of the closed position of a pivoting shutter, especially of a safe door
09/11/1991EP0445334A1 Method of intruder detection
09/11/1991CN1054513A Ceiling mount microwave transceiver with 360 degree radiation pattern
09/10/1991US5047750 Non-intrusive infant security system
09/10/1991US5047749 Passive remote photoelectric surveillance alarm with telescopic optics
09/05/1991WO1991013414A1 Ceiling mount microwave transceiver with 360 degree radiation pattern
09/05/1991DE4006631A1 Protective cover for IR motion detector - has segmented hood enabling continuous range of adjustment by varying detection angles
09/04/1991EP0444365A2 Low power consumption controller for weight sensing article input and removal monitoring system
09/04/1991EP0444357A2 Ceiling mount microwave transceiver with 360 degree radiation pattern
09/04/1991EP0444148A1 Intrusion detection barrier.
09/04/1991CN2084219U Electronic anti-theft alarm
09/03/1991US5045871 Disposable camera
09/03/1991US5045702 Infrared intrustion detector
09/03/1991CA1288496C Taut wire instrusion detection system
09/02/1991CA2033488A1 Ceiling mount microwave transceiver with 360 degree radiation pattern
08/1991
08/31/1991CA2011210A1 Intrusion detecting device
08/29/1991WO1991013413A1 Detection apparatus for security systems
08/29/1991DE4104590A1 Building alarm system - has central unit to which are coupled two signal lines with series-connected sensor discriminators
08/29/1991CA2056446A1 Detection apparatus for security systems
08/28/1991EP0443116A2 Trigger/switching device for an intrusion alarm system
08/28/1991EP0442980A1 Transducers and alarm systems incorporating them
08/28/1991CN2083770U Efflux alarm device
08/27/1991US5043705 Method and system for detecting a motionless body in a pool
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