Patents
Patents for G08B 13 - Burglar, theft, or intruder alarms (42,025)
11/1988
11/23/1988EP0291726A2 Amorphous alloy for strip-shaped sensor elements
11/22/1988US4785743 Protected room with an electrical interruptor and its application
11/22/1988EP0195070A4 Method and apparatus for producing electromagnetic surveillance fields.
11/22/1988CA1245321A1 Method, system and apparatus for use in article surveillance
11/22/1988CA1245104A1 Door alarm
11/17/1988EP0291412A1 Device for detecting a fraudulent interference with a locking member
11/17/1988EP0290548A1 Digital image acquisition system.
11/17/1988DE3715871A1 Circuit arrangement
11/15/1988US4785289 Timer controlled fire and burglar alarm system
11/15/1988US4785174 Interferometric thermal detector
11/15/1988CA1244901A1 Infrared intrusion detector
11/10/1988DE3713463A1 Alarm device for the protection of articles of clothing against theft
11/09/1988EP0289641A1 Security fenee with security wires attached to posts via detectors
11/09/1988EP0289621A1 Passive infrared burglar sensor equipped with visual field interruption monitor mechanism
11/09/1988EP0289551A1 Method for protecting objects against theft and objects protected according to such method.
11/08/1988US4783833 Method of extracting an image of a moving object
11/08/1988US4783646 Stolen article detection tag sheet, and method for manufacturing the same
11/03/1988WO1988008595A1 Capacitance proximity sensor
11/03/1988WO1988008594A1 Sensing element for an alarm system
11/03/1988DE3743426A1 Alarm device for protecting articles of clothing against theft
11/03/1988DE3713222A1 Gate
11/03/1988DE3712865A1 Method for detecting moving targets by means of an optronic (electrooptic) image recording device (camera)
11/02/1988EP0288471A1 Improvements relating to alarm systems
10/1988
10/26/1988EP0287905A1 Method for deactivating a resonant target, and circuit for carrying out this method
10/26/1988EP0287827A2 Method for the operation of a pyrodetector for the detection and/or determination of the velocity of a moving object
10/26/1988CN87210755U Multifunctional wireless alarm
10/25/1988US4780706 Pet or infant training device and method
10/25/1988US4780704 Wallet anti-theft device
10/20/1988WO1988008181A1 Continuously armed high reliability pulse train processor
10/20/1988WO1988008180A1 Electronic alarm label
10/20/1988DE3710614A1 Motion detector
10/19/1988EP0287402A2 Electronic control unit
10/19/1988EP0286897A1 Method and device for monitoring closed spaces
10/19/1988CN87107286A Method and apparatus for detecting counterfeit articles
10/18/1988US4779134 Apparatus and method for viewing of multiple television stations and switching among them
10/18/1988US4779095 For use with a vehicle to be monitored
10/18/1988US4779077 Continuously armed high reliability pulse train processor
10/18/1988US4779076 Deactivatable coded marker and magnetic article surveillance system
10/18/1988US4778996 Ceiling mounted passive infrared intrusion detector with pyramidal mirror
10/18/1988US4778770 Process for making sensor elements in a retaining frame for a pyrodetector
10/18/1988US4778552 Alarm tag and method of making and deactivating it
10/18/1988CA1243383A1 Alarm device for code driven electromechanical control device
10/18/1988CA1243381A1 Shockproof and tearproof code driven electromechanical control device
10/13/1988DE3710561A1 Infrared motion detector
10/13/1988DE3701136A1 Automatic shutdown of alarms for alarm installations securing doors in houses and flats
10/12/1988EP0285922A2 Case for video-camera
10/12/1988EP0285641A1 Sticker for alarm system
10/11/1988US4777527 Moving video surveillance system
10/11/1988US4777526 Security monitor system
10/11/1988US4777476 Security fence
10/06/1988WO1988007732A1 Microwave proximity sensor
10/05/1988EP0285559A1 Resonant marker and method of making it
10/05/1988EP0285117A2 Apparatus for controlling or regulating heating, ventilation or air conditioning plants
10/05/1988CN87208610U Anti-theft warner
10/04/1988US4775853 Device and installation for the instantaneous detection of one or more physical phenomena having a character of risk
09/1988
09/28/1988EP0283495A1 An arrangement in a purse or bag secured against theft.
09/27/1988US4774570 System for processing video signal for detecting changes in video data and security monitoring system utilizing the same
09/27/1988US4774521 Resonant marker for use with radio frequency electronic article surveillance system
09/27/1988US4774389 Intrusion detector switch system with wire bristle switch controls
09/27/1988US4773719 Optical novelty filter
09/27/1988CA1242505A1 Louvered window with alarm circuit
09/21/1988EP0283376A1 Magnetically controlled detector of the movement of a mobile part with respect to a fixed part for the opening of an enclosure
09/21/1988EP0282544A1 Portable optical alarm system for area protection
09/20/1988US4772945 Surveillance system
09/20/1988US4772880 Shopping cart anti-theft system
09/20/1988US4772879 Motion sensing alarm
09/20/1988US4772878 Merchandise theft deterrent sensor
09/20/1988US4772875 Intrusion detection system
09/20/1988US4772797 Ceiling mounted passive infrared intrusion detector with prismatic window
09/15/1988DE3706680A1 Method and device for monitoring electricity pylons for intentional damage
09/14/1988EP0281674A1 Method for preventing the theft of radio receivers
09/13/1988US4771273 Anti-tamper bracket
09/13/1988CA1242014A1 Signal receptor-reradiator and surveillance tag using the same
09/13/1988CA1242012A1 Monitoring system
09/08/1988DE3706324A1 Device for monitoring an object in the open air
09/07/1988WO1988006774A1 Alarm apparatus, preferably in a window structure
09/07/1988EP0281516A2 Security device against non-authorized climbing of fences or walls
09/07/1988EP0281033A2 Break sensor
09/06/1988US4769631 Method, system and apparatus for magnetic surveillance of articles
09/06/1988US4769545 Motion detector
09/06/1988CA1241722A1 Infrared intrusion detector
08/1988
08/31/1988EP0280361A1 A flexible detection label
08/31/1988EP0280137A1 Safety device for a system employing driverless vehicles
08/31/1988EP0279961A2 A security means for a suitcase or the like
08/31/1988CN88210264U High-strength burglar alarm glass
08/31/1988CN87212782U Theft-proof alarm device for fish pond
08/30/1988US4768090 Surveillance device using video camera
08/30/1988US4768020 Hot body intrusion activated light control unit with daylight photocell deactivation override
08/30/1988CA1241404A1 Detection means
08/24/1988EP0279802A2 Ant-theft device
08/24/1988EP0278955A1 Motion detection apparatus employing information contained in the frequency spectrum of a television signal.
08/24/1988CN87212505U Active infrared warner for preventing invader
08/23/1988US4766491 Adaptor for a video monitoring system
08/23/1988CA1241097A1 Identification device
08/17/1988EP0278538A1 Monitor device
08/17/1988EP0278492A2 Detection of unauthorized removal of theft detection target devices
08/16/1988US4764756 Intrusion detector using a vibration-responsive cable
08/16/1988US4764755 Intruder detection system with false-alarm-minimizing circuitry
08/16/1988US4764008 Surveillance housing assembly
08/16/1988CA1240772A1 Electronic surveillance system employing the doppler effect