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)
08/1988
08/16/1988CA1240762A1 Electrical controller having a window discriminator
08/16/1988CA1240756A1 Method and apparatus for producing electromagnetic surveillance fields
08/11/1988WO1988005950A1 Intrusion warning alarm system
08/10/1988EP0277560A1 Immediate detection method for undesirable damaging manipulations at an object
08/09/1988US4763111 Door closer having sound generating function
08/09/1988US4763110 Window alarm system
08/09/1988US4762082 Alarm device
08/04/1988DE3726877A1 Security window/door
08/04/1988DE3702312A1 Video monitoring device for a cash register station
08/04/1988DE3701521A1 Apparatus for the purpose of protecting, without any gaps, stationary and/or moving objects
08/03/1988EP0276513A1 Intrusion detection and land vehicle identification device
08/03/1988EP0276306A1 Intrusion detection system
08/02/1988CA1240019A1 Range limited coherent frequency doppler surveillance system
07/1988
07/28/1988WO1988005579A1 Amusement objet emitting an unusual sound when manipulated
07/27/1988CN88210074U Alarmer trigged by movement
07/26/1988US4760490 Proximity switch device
07/26/1988US4760382 Resistance loop equipment security system
07/26/1988US4760381 Intruder-detection system for room security
07/26/1988US4760295 Vibration-sensitive transducer
07/21/1988DE3702835C1 Arming device for intrusion detection systems
07/20/1988EP0274889A2 Security sensors
07/20/1988EP0274526A1 Transponder device.
07/19/1988US4759062 Arrangement for and method of protecting private security codes from unauthorized disclosure
07/19/1988US4758824 Alarm for a blind
07/19/1988US4758817 Acoustic apparatus with theft detector for automobile
07/19/1988CA1239455A1 Sensor for an alarm system
07/14/1988WO1988004901A1 Container, such as a suitcase
07/14/1988DE3249866C2 Acoustic-electrical transducer for monitoring armoured rooms (spaces)
07/13/1988EP0273938A1 Article security system.
07/13/1988CN87208460U Electronic alarm for remote control and monitor
07/13/1988CN87105124A Multifunction alarm without wire
07/12/1988US4757337 Release apparatus for a camera
07/12/1988US4757204 Ceiling mounted passive infrared intrusion detector with dome shaped lens
07/06/1988EP0273215A2 Autocollimatory light curtain
07/06/1988EP0273124A1 Antitheft system
07/05/1988US4755973 Space surveillance apparatus with sound source and method of short-range space surveillance
07/05/1988US4755889 Audio and video digital recording and playback system
07/05/1988US4755806 Movement sensor
07/05/1988US4755802 Handbag, briefcase and luggage alarm
07/05/1988US4755801 Bubble movement detector security system
07/05/1988US4755800 Window security device
07/05/1988US4755674 Infrared detector
06/1988
06/29/1988EP0272785A1 Intrusion detection system
06/29/1988EP0272784A1 Perimeter intrusion detection system with block ranging capability
06/28/1988US4754263 Burglar alarm system
06/21/1988US4752769 Infrared motion alarm
06/21/1988US4752768 Intruder detector with anti-obscuring means
06/21/1988US4752764 Electronic timing and recording apparatus
06/21/1988CA1238386A1 Portable alarm
06/21/1988CA1238384A1 Theft detection apparatus and target and method of making same
06/16/1988WO1988004459A1 Oscillation and vibration contact
06/16/1988DE3723931A1 Autoradio mit diebstahlsicherung Car radio with anti-theft
06/16/1988DE3641775A1 Turnstile for letting people through
06/16/1988DE3641327A1 Fence signalling system
06/16/1988DE3641097A1 Schwing- und erschuetterungskontakt Wrestling and erschuetterungskontakt
06/15/1988EP0271245A2 Method and apparatus for detecting counterfeit articles
06/15/1988EP0271071A2 Monitoring system for electricity pylons
06/15/1988EP0148248A4 Dual signal electromagnetic article theft detector.
06/14/1988US4751516 Antenna system for magnetic and resonant circuit detection
06/14/1988US4751500 Detection of unauthorized removal of theft detection target devices
06/14/1988US4751499 Cordless remote controlled burglar proof device
06/14/1988US4751388 Sensor element in a retaining frame for a pyrodetector and method for the manufacture thereof
06/08/1988EP0270331A2 Occupancy detectors etc.
06/08/1988CN87211420U Potted landscope type alarm-detecting transmitter
06/07/1988US4750197 Integrated cargo security system
06/07/1988US4749853 Light barrier having multiplexer for actuating transceiver pairs and multiple channel operation
06/07/1988US4749056 Sensor of the theft and the like of an automobile
06/06/1988EP0177611A4 Electronic surveillance system employing the doppler effect.
06/02/1988WO1988004082A1 Digital image acquisition system
06/02/1988WO1988004038A1 Motion detector
06/01/1988EP0268587A1 An alarm system
06/01/1988CN87214176U Lock-controlled burglar alarm device
06/01/1988CN87211311U Cat ear and eye type burglar alarm device
05/1988
05/25/1988EP0268349A2 Electronic alarm apparatus
05/25/1988CN87211542U Multi function pocket electronic alarm device
05/24/1988US4746910 Passive infrared intrusion detector employing correlation analysis
05/24/1988US4746909 Modular security system
05/24/1988US4746908 Dual-status, magnetically imagable article surveillance marker
05/24/1988US4746906 Dual technology intruder detection system with modular optics
05/24/1988US4746830 Electronic surveillance and identification
05/19/1988WO1988003689A1 Security device
05/18/1988EP0267302A1 Circuit device for a detector arrangement for space surveillance
05/18/1988EP0121521B1 Self-controlled and self protected alarm device
05/18/1988CN87210968U Speech directly alarming unit
05/18/1988CN87205939U Anti-theft wallet
05/17/1988US4745401 RF reactivatable marker for electronic article surveillance system
05/17/1988US4745400 Alarm system
05/17/1988US4745284 Infrared ray detector
05/11/1988EP0266507A1 Monitoring device, in particular by using a video camera
05/11/1988CN86106890A Omnibearing infrared warner
05/10/1988US4743890 Combined high and ow-coercivity ferromagnetic strips; alloy of cobalt, nickel, iron
05/10/1988US4743886 Testing apparatus for intrusion detectors
05/10/1988US4743884 Point to point telealarm
05/10/1988CA1236542A1 Electronic article surveillance system having microstrip antennas
05/05/1988WO1988003302A1 Method for protecting objects against theft and objects protected according to such method
05/05/1988WO1988003301A1 Passive infrared burglar sensor equipped with visual field interruption monitor mechanism
05/05/1988DE3717523C1 Protective means for a steel lattice mast
05/03/1988US4742341 Electromagnetic detection system, as well as a responder for such a system
05/03/1988US4742340 Method and apparatus for detecting counterfeit articles
05/03/1988US4742338 Intruder alarm system
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