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)
12/1990
12/18/1990US4979029 Method and systems for scanning and inspecting images
12/18/1990US4978984 Surveillance apparatus
12/18/1990US4978946 Personal security communication system
12/18/1990US4978943 Method and apparatus for making a vibration-responsive intrusion detection barrier
12/18/1990US4978942 Disguised beam-break security system
12/18/1990US4978843 Photoelectric sensor having a folded light path
12/18/1990CA1278064C Alarm tag
12/12/1990EP0401322A1 Programmable alarm system having proximity detection with vocal alarm and reporting features.
12/12/1990CN2067428U Portable burglar alarm case
12/11/1990US4977451 Process and apparatus for automatic surveillance of a site
12/11/1990US4977449 Video switching systems using frequency agile modulators and demodulators
12/11/1990US4977392 Security alarm system and switch
12/11/1990US4977323 360 degree infrared surveillance with panoramic display
12/06/1990DE3917897A1 Arrangement for generating control signals using radio or TV signals - compares received spectrum detected by antennas to detect approaching person or object
12/05/1990EP0401153A2 Fiber optic damage detection system
12/05/1990EP0400607A2 Infrared monitoring system
12/05/1990EP0400423A2 Anti-theft protection system
12/04/1990US4975891 Vehicle sensing device and method
12/04/1990US4975681 Interfering signal rejection circuitry and electronic article surveillance system and method employing same
12/04/1990CA1277400C Anti-theft and locating system
12/04/1990CA1277384C Dual-status, magnetically imagable article surveillance marker
12/04/1990CA1277350C Tubular door lock with a bell
12/01/1990CA2017617A1 Fiber optic damage detection system
11/1990
11/29/1990WO1990014649A1 Anti-theft device for spectacle frames
11/29/1990WO1990014648A1 Alarm system
11/29/1990WO1990014634A1 Digital data processing
11/29/1990WO1990009010A3 Article input and removal monitoring system and method for article storage systems and weight sensor therefor
11/29/1990DE3916615A1 Security mark with housing and fastener - has switch for alarm signal on mark removal from protected object
11/29/1990DE3916614A1 Securing device for objects with security mark - has separate communication part with alarm signal receiver and signal transmission circuit
11/28/1990CN2066605U Multifunctional omnibearing electronic anti-theft alarm for door and window
11/28/1990CN2066604U Magnetic anti-theft alarm
11/27/1990US4974088 Remote control apparatus for a rotating television camera base
11/27/1990US4973949 Dual wheatstone bridge strain gage marine intrusion sensor
11/27/1990US4973945 Magnetically linked theft sensing system
11/27/1990US4973944 Electrical signal and alarm protection proximity device
11/27/1990US4973843 Pyroelectric infrared sensor
11/27/1990US4973837 Proximity detectors with dual-speed tracking circuitry
11/27/1990US4972713 Sensor of the theft and the like of automobiles
11/27/1990CA1277024C Adaptor for a video monitoring system
11/21/1990CN2066169U Moving switch type anti-stealing alarm
11/21/1990CN2066168U Swinging type anti-stealing automatic alarm
11/21/1990CN2066167U Vibration, impaction striking type anti-stealing alarm
11/20/1990US4972198 Multiple loop antenna
11/20/1990US4972176 Laminated polymeric panels with electroconductive rods sandwiched between to form a window
11/20/1990US4972175 Security enclosures
11/15/1990DE3915812A1 Breakage detector for double glazed window - has alarm sensor and source between window panes supplied via conductive strips
11/15/1990DE3915191A1 HF anti-theft system - using HF transmitter and cooperating receiver contained in security tag
11/14/1990EP0396869A1 Alarm device for surface protection
11/14/1990EP0396609A1 Direction sensitive energy detecting apparatus
11/13/1990US4970495 Resonant frequency characteristic tag and method of manufacturing the same
11/13/1990US4970494 Radio controlled home security system
11/13/1990CA1276261C Variable sensitivity motion detector
11/13/1990CA1276259C Attitude detection device
11/13/1990CA1276256C Security fence with fuse wires fastened to posts via sensors
11/13/1990CA1276255C Magnetic marker having switching section for use in electronic article surveillance systems
11/07/1990CN2065344U Burglar alarm
11/07/1990CN2065343U Alarm for use in the national treasury
11/07/1990CN2065342U Steel ball triggered pocket alarm
11/07/1990CN2065341U Multifunciton cipher burglar alarm
11/07/1990CN2065340U Fire-proof anti-theft glass with alarm
11/06/1990US4969038 Method for scanning image information
11/06/1990US4968973 Anti-theft device
11/06/1990US4968972 Conversion of bias strip in a frequency-dividing-transponder tag into a tripole bar magnet to deactivate the tag
11/06/1990US4967576 Security cabinet, in particular for the management of means of access or other controlled-use objects
10/1990
10/31/1990EP0395135A1 Method for the registration of and/or combating pests, such as mice and rats
10/31/1990EP0394371A1 Wallet incorporating credit card alarm system
10/30/1990US4967185 Multi-directionally responsive, dual-status, magnetic article surveillance marker having continuous keeper
10/30/1990US4967184 Computer disk with security protection
10/30/1990US4967183 Method of intrusion detection over a wide area
10/30/1990US4967081 Infrared detector
10/25/1990DE3919266C1 Anti-burglar installation for door or window - uses impact arm moving against spring force to act as pressure sensor releasing alarm
10/24/1990EP0393807A2 T.V. motion detector with false alarm immunity
10/24/1990EP0393774A1 Circuit and data transmission device containing such activation
10/24/1990CN2064521U Joint-guarding electronic alarming doorbells
10/23/1990US4965552 Electronic animal repellant apparatus
10/23/1990US4965551 Burglar alarm system for multi-unit mailboxes
10/23/1990US4964951 Mixing paper ingredients and light absorptive material; applying electric field so that paper product has selective light absorption characteristics
10/23/1990CA1275474C Exit control and surveillance system
10/18/1990WO1990012379A1 Monitoring system for monitoring the panes of glass of a space, for example a motor vehicle interior
10/18/1990DE3911884A1 Security alarm system for doors and windows - has normally open signal contacts and two independent alarm activation switches
10/17/1990EP0392036A1 Method and compensation of the disturbed parts of the signals in a measuring system
10/17/1990CN2064086U Lock type anti-theft alarm for tv
10/16/1990US4963962 Optical surveillance assembly and camera
10/16/1990US4963961 For a TV system
10/16/1990US4963749 Quad element intrusion detection
10/16/1990US4963021 Photoelectric switching apparatus
10/16/1990US4962602 Sticker for alarm system
10/10/1990EP0391883A2 Optoelectronic obstacle detector
10/10/1990EP0390779A1 Continuously armed high reliability pulse train processor
10/10/1990EP0290548A4 Digital image acquisition system
10/10/1990CN2063670U Civil intelligence burglar alarm
10/10/1990CN2063669U Shake alarm device with mounted chain lock
10/09/1990US4962544 Radio receiver
10/09/1990US4962371 CPS alarm system
10/09/1990US4962369 Merchandise security system utilizing RF transmitter
10/05/1990CA2011851A1 Alarm system for electrical devices
10/04/1990WO1990011586A1 Infra-sonic detection system
10/04/1990DE3910715A1 Infrasound detector
10/04/1990DE3910653A1 Infrared movement detector
10/04/1990DE3910514A1 Infrared movement detector
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