| Patents for G08B 25 - Alarm systems in which the location of the alarm condition is signalled to a central station, e.g. fire or police telegraphic systems (15,949) |
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| 02/27/1990 | US4904983 Alarm system |
| 02/27/1990 | US4904982 Visual and audible warning device |
| 02/22/1990 | DE3828296A1 Alarm device |
| 02/14/1990 | EP0354542A2 Security system with door deadbolt interlock |
| 02/08/1990 | WO1990001245A1 An addressing device |
| 02/07/1990 | EP0353438A1 In motion setting device for radio controlled sirens working in accordance with different programs |
| 02/06/1990 | CA1265597A1 Surveillance installation |
| 01/31/1990 | EP0352848A2 System having electronic assembly groups with at least a micro processor |
| 01/31/1990 | CN2052135U Digital network alarm |
| 01/31/1990 | CN1006664B Multifunctional alarm and control system |
| 01/30/1990 | CA1265231A1 Apparatus for monitoring a communications system |
| 01/25/1990 | DE3824532A1 Alarm system with computer evaluation |
| 01/24/1990 | CN2051760U Wireless incident reporting device |
| 01/24/1990 | CN2051759U Active type infrared alarm |
| 01/17/1990 | EP0350554A2 Security systems |
| 01/16/1990 | US4894642 Voice security system |
| 01/10/1990 | EP0350119A1 Stand-alone utility device with antitheft code |
| 01/03/1990 | CN2050634U Electronic anti-theft device for densely-populated residential district |
| 01/02/1990 | US4891650 Vehicle location system |
| 12/14/1989 | WO1989012289A1 Methods, systems and apparatus for detecting changes in variables |
| 12/13/1989 | EP0345337A1 System for interfacing an alarm reporting device with a cellular radio transceiver |
| 12/13/1989 | CN2049384U Multifunction alarm and monitoring centre system apparatus |
| 12/12/1989 | US4887291 System for annunciating emergencies |
| 12/12/1989 | US4887072 Alarm apparatus |
| 11/29/1989 | EP0344138A2 Secure personnel monitoring system |
| 11/29/1989 | CN2048499U Anti-theft lock with warner for joint defence |
| 11/28/1989 | US4884132 Personal security system |
| 11/28/1989 | US4884060 Multi-state selection switch for a personal emergency response system |
| 11/16/1989 | DE3815691A1 Security alarm device and its use for energy conversion plants |
| 11/15/1989 | EP0341906A2 A security system |
| 11/14/1989 | US4881252 Ice making system |
| 11/08/1989 | EP0341022A2 Room monitoring and control system |
| 11/07/1989 | US4879547 Gas zone valve emergency alarm system |
| 10/31/1989 | US4878236 Automatic emergency locator system and method |
| 10/25/1989 | EP0338274A1 Data transmission system for a wireless danger signal arrangement |
| 10/25/1989 | CN1036647A Automated system to prioritize repair of plant equipment |
| 10/05/1989 | DE3809560A1 Remote-controlled emergency call system |
| 09/27/1989 | EP0333771A1 Personal alarm system. |
| 09/27/1989 | EP0333716A1 Aircraft security system |
| 09/27/1989 | CN2045137U Remote-controlled burglar alarm device capable of decoding by touching |
| 09/26/1989 | CA1260545A1 Security monitoring system |
| 09/26/1989 | CA1260100A1 Security control system |
| 09/20/1989 | EP0333459A2 Apparatus and method for position reporting |
| 09/19/1989 | US4868859 Supervised, interactive alarm reporting system |
| 09/12/1989 | US4866594 Gas cylinder monitor and control system |
| 09/07/1989 | DE3805810A1 Communication system for vehicles |
| 09/05/1989 | US4864277 Radio alarm system |
| 08/24/1989 | DE3826243A1 Centrally controlled information system, including the terminal used therefor |
| 08/22/1989 | US4859990 Electrically programmable transceiver security system and integrated circuit |
| 08/15/1989 | US4857679 Alarm system |
| 08/10/1989 | WO1989007304A1 Procedure and device for protection against disasters and pollution |
| 08/08/1989 | US4855713 For programming a local security system |
| 07/26/1989 | EP0325433A2 Wireless transmission-reception control system |
| 07/25/1989 | US4851823 Fire alarm system |
| 07/25/1989 | CA1257940A1 Automatic personnel monitoring system |
| 07/25/1989 | CA1257936A1 Method of transmitting information in a digital transmission system |
| 07/19/1989 | CN1034080A 报警系统 Alarm System |
| 07/18/1989 | CA1257654A1 Wireless local area network for use in neighborhoods |
| 07/11/1989 | US4847595 Alarm system |
| 07/11/1989 | US4847593 Transmission circuit of fire protection/security system |
| 07/11/1989 | US4847577 Security and alarm system employing a particular pulse width discriminator |
| 07/04/1989 | CA1256809A1 Recording method and a recording and/or reproducing apparatus |
| 06/28/1989 | EP0322204A2 Detector unit and system |
| 06/27/1989 | US4843378 Failure alarm device for an appliance |
| 06/21/1989 | EP0320876A2 Fault information collection processing system |
| 06/15/1989 | WO1989005553A1 System for interfacing an alarm reporting device with a cellular radio transceiver |
| 06/07/1989 | EP0319266A2 Fire alarm system |
| 06/07/1989 | EP0318710A1 Central station alarm |
| 05/24/1989 | EP0316853A1 Cableless danger signal system |
| 05/23/1989 | US4833451 Individual source identification |
| 05/23/1989 | US4833449 Home security system |
| 05/23/1989 | CA1254629A1 Equipment security system |
| 05/11/1989 | EP0232390A4 Security device. |
| 05/09/1989 | US4829285 In-home emergency assist device |
| 05/03/1989 | DE3735994A1 Device for monitoring the pylons of an overhead line |
| 04/26/1989 | CN1032596A Fire alarms receivers |
| 04/25/1989 | US4825457 Cellular network data transmission system |
| 04/25/1989 | US4825196 Signal transmission circuit of fire/security protection system |
| 04/19/1989 | EP0312431A1 Remote goods and/or persons supervising method |
| 04/18/1989 | CA1252846A1 Sensor cable |
| 04/13/1989 | DE3731960A1 Alarm-emitting device |
| 04/11/1989 | CA1252536A1 Data communication system with key data bits denoting significance of other data bits |
| 04/06/1989 | WO1989003103A1 System and method for transferring status information between a plurality of status sites |
| 04/04/1989 | US4818998 Method of and system and apparatus for locating and/or tracking stolen or missing vehicles and the like |
| 03/30/1989 | DE3740632A1 Transmitter device |
| 03/29/1989 | EP0308446A1 Combined alarm, security and rescue system. |
| 03/29/1989 | CN2035123U Domestic protective device able to form a defence system |
| 03/28/1989 | US4816808 Fire alarm system |
| 03/28/1989 | CA1251877A1 Tone-responsive circuit for activating an instrumentality interfacing system |
| 03/21/1989 | CA1251585A1 Interphone system with security function |
| 03/15/1989 | EP0306577A2 System and method for determining the position of a person or other body |
| 03/14/1989 | US4812821 For the hearing impaired |
| 03/14/1989 | US4812820 Electronic surveillance system and transceiver unit therefor |
| 03/14/1989 | US4812819 Functional relationship-based alarm processing system |
| 03/14/1989 | EP0231291A4 Electronic surveillance system and transceiver unit therefor. |
| 02/28/1989 | US4808971 Alarm apparatus |
| 02/21/1989 | US4807255 Alarm system responsive to intrusion induced phase unbalance |
| 02/21/1989 | US4805722 Anti theft system for motor vehicles and the like |
| 02/14/1989 | US4804942 Operating an end of line resistor loop |
| 02/09/1989 | WO1989001214A1 Alarm locator module for picket barrier intrusion detection and location system |