Patents
Sitemap › G08 - Signalling › G08B - Signalling or calling systems; Order telegraphs; Alarm systems › 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
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)
01/1988
01/20/1988EP0253085A1 Method for detecting and obtaining information about changes in variables
01/14/1988DE3621682A1 Device for transmitting signals and multi-frequency code receivers suitable for this purpose
01/12/1988CA1231419A1 System for control and surveillance of emergency exits
01/07/1988EP0251457A1 Alarm system
01/07/1988EP0251224A2 Adapter module for improving the reliability of an alarm circuit
01/07/1988EP0251223A2 Fail-safe alarm system
01/07/1988EP0250776A1 Method for detecting and obtaining information about changes in variables
01/05/1988US4718059 Method of transmitting information in a digital transmission system
12/1987
12/23/1987DE3620681A1 Circuit arrangement for identifying alarm signalling units
12/09/1987EP0248298A1 Danger alarm installation
11/1987
11/24/1987US4709330 System for supervising and guiding persons in construction
11/19/1987EP0245555A1 Method of and system and apparatus for locating and/or tracking stolen or missing vehicles and the like
11/10/1987US4706271 Communication lines with terminate and leave capability-DC alarm bridge
11/10/1987US4706065 Pull station
11/05/1987WO1987006750A1 Fire alarm facility
10/1987
10/27/1987US4703325 Remote subsystem
10/21/1987EP0242099A2 Anti-theft and locating system
10/15/1987DE3709589A1 System zur uebertragung von informationen von einer mehrzahl von sensoren zu einer zentraleinheit, insbesondere zur feststellung von funktionsstoerungen an festen und beweglichen organen von maschinen und fahrzeugen System for transmitting information from a plurality of sensors vehicles to a central processing unit, in particular for fixed position of funktionsstoerungen to fixed and moving bodies of machines and
09/1987
09/29/1987US4697173 Load sensing alarm condition monitor
09/29/1987CA1227554A1 Fire and explosion detection and suppression
09/24/1987WO1987005731A1 Single-wire loop alarm system
09/22/1987US4695830 Wire runtogether sensor
09/16/1987EP0237457A1 Exit controlling and monitoring system
09/16/1987CN86210134U General fire alarm controller
09/15/1987US4694282 Security monitoring system
09/08/1987US4692742 Security system with correlated signalling to selected satellite stations
08/1987
08/27/1987WO1987005137A1 Personal alarm transmitter
08/26/1987EP0233735A1 Communication system
08/19/1987EP0232390A1 Security device
08/18/1987US4688183 Fire and security system with multi detector-occupancy-temperature-smoke (MDOTS) sensors
08/13/1987DE3604058A1 Protection installation
08/12/1987EP0232198A1 Protective system of all sites of a network by means of anticipation of a fault
08/12/1987EP0231291A1 Electronic surveillance system and transceiver unit therefor.
08/12/1987EP0231281A1 Security and alarm system
08/04/1987USRE32468 Central station alarm
07/1987
07/23/1987DE3608652C1 Casing for a fire detector
07/22/1987EP0229198A1 Neighbourhood alarm
07/21/1987US4682348 Life safety audio system having a voice synthesizer and a constant volume telephone network
06/1987
06/17/1987EP0129563A4 Data transmission system with alarm.
06/09/1987US4672365 Security system with digital data filtering
06/04/1987DE3542407A1 Circuit arrangement for transmitting communications signals
06/02/1987US4670739 Communication system especially useful as an incident location reporting security system
06/02/1987CA1222554A1 Method and apparatus for reporting dangerous conditions
05/1987
05/26/1987US4668939 Apparatus for monitoring disturbances in environmental conditions
05/19/1987US4667188 Portable alarm
05/12/1987US4665544 Home control system and interphone system
05/12/1987US4665385 Hazardous condition monitoring system
05/12/1987US4665384 Signal-transmitting junction unit of hazard alarm system
04/1987
04/28/1987US4661804 Supervised wireless security system
04/28/1987US4660528 Apparatus for remote termination of the operation of a selected motor vehicle
04/14/1987US4658249 Data communication system with key data bit denoting significance of other data bits
04/07/1987US4656652 Emergency warning device for use in a party line telephone system or the like
03/1987
03/24/1987US4652862 Surveillance and control system for emergency exists installed in a building
03/24/1987US4652859 Alarm reporting system
03/17/1987US4651138 Intruder alarm system
03/12/1987WO1987007418A1 Transmission circuit of facilities for preventing disasters
03/04/1987EP0212947A2 Automatic personnel monitoring system
03/03/1987US4647914 Security apparatus and system
02/1987
02/26/1987WO1987001229A1 Security device
02/26/1987WO1987001226A1 Surveillance installation
02/26/1987DE3529167A1 Emergency alarm system to protect an enclosed security zone
02/19/1987DE3529127A1 Method for data transmission in alarm systems
02/18/1987CN85106587A Warning and monitor system with addressing element
02/17/1987US4644478 Monitoring and alarm system for custom applications
02/17/1987US4644103 Tone-responsive circuit for activating an instrumentality interfacing system
02/03/1987US4641127 Security and fire protection system
01/1987
01/29/1987WO1987000665A1 Security and alarm system
01/20/1987US4638297 Remote signaling box
01/13/1987US4636649 Photoelectric smoke sensor terminal
01/10/1987CN85101213A Alarm system relays
01/06/1987US4635040 Fire detection alarm system
01/06/1987CA1216340A1 Intrusion detector
12/1986
12/30/1986US4633231 Monitoring arrangement
12/30/1986EP0206483A2 Security control system
12/23/1986US4631693 System for monitoring the operation of output transducers of a central control and monitoring unit for machines and/or devices usable in production and/or product packaging lines
12/23/1986US4631527 Transmitter-receiver coded security alarm system
12/17/1986EP0205401A2 Tone-responsive circuit for activating an instrumentality interfacing system
12/16/1986US4630289 Emergency locator transmitter incident time correlator
12/16/1986US4630035 Alarm system having alarm transmitter indentification codes and acoustic ranging
12/09/1986CA1215123A1 Remote sensing systems
11/1986
11/18/1986US4623876 Alarm system to transmit detection information detected by a detector due to a radio system
11/18/1986CA1214292A1 Portable device for monitoring local area
11/04/1986CA1213650A1 Emergency access method in centralized monitoring system
10/1986
10/29/1986EP0199651A1 Alarm system for an electromechanical driving unit operated by a code
10/29/1986EP0199294A1 Method and device for signalling over a bidirectional digital transmission link
10/15/1986EP0197815A1 Method ensuring the surveillance of persons and/or goods, and system using this method
10/07/1986US4616214 Security system
09/1986
09/16/1986US4612535 Add-on alert system
09/09/1986US4611198 Security and communication system
09/09/1986US4611100 Bunching block for McCulloh circuits and method of operation
09/02/1986US4610012 Signal transmission system featuring bidirectional transmission of different signal types over a common transmission line connecting a central unit and a plurality of terminal units
08/1986
08/27/1986EP0192445A2 Recording methods and recording and/or reproducing apparatus
08/12/1986US4606073 Assistance summoning system
07/1986
07/30/1986CN85108116A Security monitoring system
07/30/1986CN85108005A Alarm transmitting method
07/29/1986US4603325 For evaluating installation of a wireless alarm system
07/22/1986US4602357 Coded acoustic alarm transmitter/receiver system
07/22/1986CA1208384A1 Interrogation device
07/15/1986US4601064 Communication system
07/15/1986CA1207840A1 Combined communication, security and alarm radio system
1 ... 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160