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)
08/1981
08/18/1981US4284985 Stolen equipment recovery device
08/18/1981US4284849 Monitoring and signalling system
08/04/1981US4282517 Automatic ringback for direct current monitoring system
08/04/1981CA1106464A1 Four wire multi-satellite intrusion alarm with multiplex annunciation
07/1981
07/29/1981EP0032593A2 Alarm, security and monitoring apparatus
07/28/1981CA1106089A1 Automatic dialling device
07/22/1981EP0032169A1 Signalling arrangement operating with electromagnetic radiation
07/21/1981US4280120 Fire alarm signal station
07/15/1981EP0032135A2 Monitoring apparatus
07/14/1981US4278967 Wireless detection and warning system
07/07/1981US4276939 Fire detection and extinguishing systems
06/1981
06/30/1981US4276161 Fuel filter provided with a water level detecting means
06/30/1981CA1104233A1 Blood pressure alarm system with malfunction protection circuitry
06/16/1981US4274087 Annunciator monitor circuit
06/02/1981US4271511 Communications network
05/1981
05/19/1981CA1101511A1 Vehicle system monitor
05/12/1981US4267553 Method and apparatus for securing attache cases
05/12/1981US4267549 Pull station protector
05/05/1981US4266102 Automatic dialing device
05/05/1981CA1100589A1 Single wire power/signal system for vehicle auxiliary devices
04/1981
04/29/1981EP0027738A2 Intrusion alarm system
04/14/1981US4262286 Apparatus for monitoring fire and effecting control operation
04/14/1981US4262283 System for transmitting alarm information over telephone lines
04/08/1981EP0026462A2 Method and device for individual alarm identification in intrusion or fire alarm systems
04/07/1981US4260981 Physical condition monitoring system for detection in remote places
03/1981
03/31/1981US4259664 Taxicab robbery alerting system
03/31/1981US4259548 Apparatus for monitoring and signalling system
03/24/1981US4258358 Door opening sensing and alarm producing device
03/24/1981US4258357 Alarm signalling systems
03/17/1981US4257038 Coded security system
03/17/1981US4257037 Indicator and alarm for burglar alarms and the like
03/05/1981WO1981000636A1 Detection device with detector
03/03/1981US4254411 Danger alarm system
02/1981
02/24/1981US4253091 Method and apparatus for detection of alarm conditions
02/24/1981CA1096520A1 System for transmitting alarm information over telephone lines
02/11/1981EP0023511A1 Process and device for detecting and interpreting a distress signal.
02/10/1981US4250484 Alarm system for detecting a plurality of different alarm conditions
02/10/1981US4250353 Danger alarm system
02/03/1981US4249206 Audio and visual intercommunication and surveillance system
02/03/1981US4249036 Remote alarm installation
02/03/1981CA1095147A1 Testable protective system with redundant trip
01/1981
01/20/1981US4246493 Annunciator
01/20/1981US4245997 Detection of gas by color change, warning by an alarm when gas is above or below threshold
01/20/1981CA1094187A1 Base loop code transmitter
01/13/1981CA1093656A1 Safety lock system
01/07/1981EP0022026A1 Alarm transmission system
01/07/1981EP0021425A1 Method and devices for signalling emergency calls and starting first aid measures
01/07/1981EP0021232A1 Device for a burglary alarm system
01/06/1981US4243980 Antenna system for electronic security installations
01/06/1981US4243971 Test circuit for automotive passenger restraint systems
01/06/1981CA1093126A1 Switch means for radio alarm device
12/1980
12/30/1980US4242670 Photosensitive alarm systems
12/16/1980US4240078 Frequency selective annunciator system
12/02/1980US4237454 System for monitoring bearings and other rotating equipment
11/1980
11/26/1980EP0019286A2 Data communications terminal
11/25/1980US4236068 Personal identification and signaling system
11/25/1980CA1090483A1 High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means
11/18/1980US4234874 Alarm system and method thereof
11/18/1980US4234866 Centralized alarm system for vehicles
11/18/1980CA1089997A1 Apparatus for distinguishing between failures in a digital transmission network
11/11/1980US4233598 Emergency stop circuit monitoring system
11/11/1980US4233594 Fire detection and observation system
11/04/1980US4232292 Data transmitter device
10/1980
10/29/1980EP0018071A1 A security system
10/15/1980EP0017448A1 Electronic identification apparatus and identification system incorporating same
10/14/1980US4228424 Central station alarm
10/14/1980US4227526 Mechanism for aurally instructing a patient and method
10/14/1980CA1087715A1 Multi-satellite intrusion alarm control system
10/07/1980US4227180 Centralized monitor and control system
10/01/1980EP0016149A1 Switch means for radio alarm device
09/1980
09/17/1980EP0015656A2 Improvements relating to security equipment
09/16/1980US4223302 Conditions monitoring device
09/09/1980US4222041 Danger alarm system
09/03/1980EP0014714A1 Alarm device partly mobile with protection against failure to operate, breakdown, sabotage and false alarm
08/1980
08/26/1980US4219803 Two-wire fire sensing and receiving system
08/19/1980CA1084138A1 Remote signalling apparatus, particularly suitable for anti-theft and anti-burglary protection
08/07/1980WO1980001631A1 Process and device for detecting and interpreting a distress signal
08/06/1980EP0013706A1 System for automatically monitoring the charging state of the mains independent power supply and the humidity in the responder of a vehicle location system
08/05/1980CA1083243A1 Monitoring system
08/05/1980CA1083242A1 Monitor and alarm apparatus in loop line system
07/1980
07/22/1980US4214125 Method and apparatus for speech synthesizing
06/1980
06/25/1980EP0012155A1 Intruder alarm device
06/24/1980US4209666 Multiplexing system line fault isolation and identification
06/11/1980EP0012092A1 Security system
06/11/1980EP0011680A1 Malfunction detecting circuit for a safety device actuator used to protect vehicle occupants in the event of a collision
06/10/1980US4207524 Radio coupled device for detecting and analyzing weak transmissions
05/1980
05/28/1980EP0011461A1 An improved fire detection system
05/28/1980EP0011444A2 Security system
05/13/1980US4203096 Sensor monitoring alarm system
05/06/1980US4201982 Four wire multi-satellite intrusion alarm with multiplex annunciation
04/1980
04/16/1980EP0009901A1 Alarm system
04/15/1980US4198624 Alarm system
04/15/1980CA1075792A1 Multi-mode intrusion alarm system
04/08/1980US4197497 Automatic police emergency locator system
04/03/1980WO1980000630A1 Installation for transmitting alarm signals
03/1980
03/25/1980US4195288 Alarm system
03/20/1980WO1980000516A1 Switch means for radio alarm device
03/11/1980US4193069 Latching alarm smoke detector
03/04/1980US4191948 Digital transmission apparatus particularly adapted for security systems
02/1980
02/19/1980US4189721 Personal alarm system
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