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)
10/1987
10/13/1987CA1228135A1 Resonant tag circuits useful in electronic security systems
10/07/1987EP0240456A2 Perimeter surveillance system
10/07/1987EP0239817A2 Method and device for protecting a space
10/07/1987EP0239807A1 Capacitive intrusion protection system
10/06/1987US4698615 For boats
10/06/1987CA1227847A1 Resonant tag and deactivator for use in an electronic security system
10/01/1987DE3609105A1 Transmitter invented as protection against theft and used in food, cosmetics and spirits retailing
09/1987
09/30/1987EP0238577A1 Burglary or anti-theft protection system
09/30/1987EP0070883B1 Photoelectric obstruction detector for elevator doorways
09/30/1987CN86206359U Instant response contact type alarm
09/29/1987US4697170 Method for minimizing false alarms and electronic noise in electronic article surveillance systems.
09/29/1987US4697081 Infra-red radiation detector devices
09/23/1987EP0238458A2 Receiving device for presence detection
09/23/1987EP0237950A1 Method and apparatus for deactivating targets used in electromagnetic type article surveillance systems
09/23/1987EP0237561A1 Audio and video digital recording and playback system
09/22/1987CA1227259A1 Distributed capacitance lc resonant circuit
09/17/1987DE3706999A1 Apparatus for securing fences or walls against unauthorised persons climbing over them
09/16/1987EP0237457A1 Exit controlling and monitoring system
09/16/1987EP0236755A1 Device for detecting an interruption in a space between the emitter and the receiver of a light signal sent by at least one emitter
09/16/1987CN86206755U Touching alarm with auxiliary power source
09/15/1987US4694283 Identification device in the form of a tag-like strip affixable to an article
09/09/1987EP0236170A1 Device and method for the remote monitoring of sights, incorporating abnormal events detection means, acoustic listening means and video watching means
09/09/1987EP0235372A2 Infrared ray detector
09/08/1987US4692747 Article security system
09/08/1987US4692746 Recording-tape-reel assembly with electronic tag
09/08/1987US4692744 Glazing unit alarm systems
09/08/1987US4692743 Alarm system
09/08/1987US4692619 Pyroelectric type detecting device
09/08/1987CA1226641A1 Protective grating
09/08/1987CA1226451A1 Alarm lock
09/03/1987DE3606465A1 Alarm device for space protection
09/02/1987EP0235103A2 A system for transporting valuable documents
09/02/1987EP0234312A1 Ceiling mounted passive infrared intrusion detector with dome shaped lens
09/02/1987EP0234116A1 Alarm system
09/01/1987US4690242 Sound actuated switch
09/01/1987CA1226360A1 Electronic sound detecting unit for locating missing articles
08/1987
08/27/1987WO1987005136A1 Alarm tag
08/27/1987DE3620030A1 Arrangement for monitoring an essentially closed room
08/26/1987EP0233735A1 Communication system
08/26/1987EP0233390A1 Method and apparatus for discriminating sounds due to the breakage of glass
08/26/1987EP0233256A1 Security apparatus
08/25/1987US4689610 Access control and security alarm apparatus and method
08/25/1987US4689486 Folded optical system for radiation detection device
08/25/1987CA1225853A1 Magnetically operated door chime
08/19/1987EP0233163A1 Alarm tag
08/19/1987EP0232584A2 Improved label for use in anti-theft surveillance system
08/19/1987EP0232406A1 Picket barrier and intrusion sensing system
08/19/1987EP0232390A1 Security device
08/19/1987EP0232388A1 Security apparatus
08/18/1987US4688244 Integrated cargo security system
08/18/1987US4688025 Movement sensor
08/18/1987US4686792 Combination storm window and security system
08/18/1987CA1225721A1 Infra-red radiation detector
08/18/1987CA1225715A1 Field disturbance detection system
08/13/1987WO1987004833A1 Signalling method and apparatus
08/13/1987DE3604307A1 Method for safeguarding objects
08/13/1987DE3604044A1 Circuit arrangement for active glass breakage detectors
08/12/1987EP0232031A2 An aircraft surveillance system
08/12/1987EP0231549A1 Protected enclosure with electrical switch and its application
08/12/1987EP0231365A1 Security apparatus
08/12/1987EP0231364A1 Security apparatus
08/11/1987US4686517 Field disturbance detection system
08/11/1987US4686516 Method, system and apparatus for use in article surveillance
08/11/1987US4686514 Alarm system for computers and the like
08/11/1987US4686513 Electronic surveillance using self-powered article attached tags
08/11/1987US4686154 Security system label
08/11/1987US4685234 Surveillance marker clip assembly
08/06/1987DE3602848A1 Electrical combination component as a closed LC circuit, and a method for its production
08/05/1987EP0230671A1 Video-mobile surveillance device
08/05/1987EP0230517A2 Light barrier
08/04/1987US4684933 Unauthorized personnel detection system
08/04/1987US4684932 Method and arrangement for measuring changes of capacitive state at a security fence
08/04/1987US4684931 Capacitive sensing security system
08/04/1987US4684930 Method and apparatus for deactivating targets used in electromagnetic type article surveillance systems
08/04/1987US4684929 Microwave/seismic security system
08/04/1987US4684928 Motion sensor unit
07/1987
07/30/1987WO1987004551A1 Receiving device
07/30/1987DE3602303A1 Method for the monitoring of persons, especially for the prevention of thefts in self-service shops
07/30/1987DE3602299A1 Person detection and identification system
07/29/1987EP0229869A1 System for remote control of the antitheft protection devices of a property
07/29/1987CN87100371A Light barrier
07/28/1987US4683462 Device for protecting audio equipment in vehicle against theft
07/28/1987US4683461 Inductive magnetic field generator
07/28/1987US4683460 Intrusion alarm system with automatic exit control and misset indicator
07/28/1987US4683356 Taut wire fence system and sensor therefor
07/28/1987CA1224832A1 Door position monitor with automatic adjustment
07/22/1987CN86204788U Number code controlled electronic theft-guarding against system
07/22/1987CN86200577U Portable alarm system for guarding against theft and loss
07/21/1987US4682248 Audio and video digital recording and playback system
07/21/1987US4682154 Label for use in anti-theft surveillance system
07/16/1987WO1987004283A1 Security tag deactivation system
07/16/1987WO1987004282A1 Inventory control system
07/15/1987EP0228467A1 Magnetic article surveillance system, and method using markers
07/15/1987CN86209122U Alarm guarding against theft
07/14/1987US4680574 For detecting the removal of an electrical apparatus
07/14/1987US4680573 Intrusion warning wire fence
07/09/1987DE3600307A1 Trolley for transporting shopping or luggage
07/09/1987DE3600259A1 Motion detector for space surveillance
07/08/1987EP0148190B1 A theft protection system particularly for shop areas
07/08/1987CN85205726U Alarm device for portable safe
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