Patents
Sitemap › G08 - Signalling › G08B - Signalling or calling systems; Order telegraphs; Alarm systems › G08B 26 - Alarm systems in which substations are interrogated in succession by a central station
Patents for G08B 26 - Alarm systems in which substations are interrogated in succession by a central station (1,136)
09/1979
09/18/1979CA1062792A1 Central station system transmission apparatus
09/11/1979CA1062375A1 Operating condition data system
07/1979
07/24/1979US4162489 Fire alarm system comprising a plurality of alarms which may be operated by way of an alarm loop
07/24/1979US4162488 Alarm system
07/17/1979US4161727 Process for generating and transmitting different analog measured values to a central control from a plurality of fire alarm circuits which are arranged in the form of a chain in an alarm loop
07/03/1979CA1057832A1 Security polling transponder system
06/1979
06/05/1979CA1056032A1 Centralized monitoring system for gas leakage
04/1979
04/03/1979US4148012 Access control system
03/1979
03/13/1979US4144528 Alarm system
02/1979
02/20/1979US4141006 Security system for centralized monitoring and selective reporting of remote alarm conditions
02/13/1979US4139843 Alarm system
10/1978
10/10/1978US4119815 Central station system including secondary communication path established through commercial telephone network
05/1978
05/30/1978US4092642 Plural sensor monitoring and display device
05/09/1978US4088985 Centralized monitoring system for gas leakage
05/09/1978US4088983 Electronic polling and calling communication system
03/1978
03/14/1978US4079414 Interrogated transponder system
01/1978
01/10/1978US4068105 Central station system transmission apparatus
01/03/1978US4067008 Multiplex interrogation system using pulses
11/1977
11/01/1977US4056684 Surveillance system
10/1977
10/18/1977USRE29450 Machine operating condition monitoring system
08/1977
08/23/1977US4044351 System monitor with innate line security ability
06/1977
06/28/1977US4032908 Security alarm system
05/1977
05/31/1977US4027289 Operating condition data system
04/1977
04/19/1977US4019172 Central supervisory and control system generating 16-bit output
01/1977
01/04/1977US4001785 Apparatus for monitoring changes of multiple inputs
01/04/1977US4001772 Coded signaling and control system
12/1976
12/07/1976USRE29068 Appliance removal alarm system for motels
11/1976
11/23/1976US3993979 Time division-multi-voltage level matrix switching
09/1976
09/28/1976US3983554 Electric power distribution system including a Master Annunicator and Central Control Unit
07/1976
07/13/1976US3968637 Yarn break detection by means of triboelectrical noise signal
06/1976
06/15/1976US3964047 Fire-alarm audible signaling system permitting selective communications and signaling
04/1976
04/20/1976US3952287 Data detection system
04/20/1976US3952285 Security polling transponder system
02/1976
02/24/1976US3940739 Alarm reporting system
02/17/1976US3939460 Security alarm system
01/1976
01/13/1976US3932858 Master antenna line communication system
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