Patents
Sitemap › G08 - Signalling › G08B - Signalling or calling systems; Order telegraphs; Alarm systems › G08B 27 - Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations
Patents for G08B 27 - Alarm systems in which the alarm condition is signalled from a central station to a plurality of substations (1,111)
11/1996
11/12/1996US5574999 Alert receiver
11/05/1996US5572201 Alerting device and system for abnormal situations
10/1996
10/15/1996US5565909 For processing location specific data
09/1996
09/25/1996CN1131777A Synchronized video/audio alarm system
08/1996
08/28/1996CN2234111Y Multi-function comprehensive controller
02/1996
02/15/1996WO1996004632A1 Alerting device and system for abnormal situations
02/08/1996WO1996003729A1 Community alarm system
10/1995
10/11/1995EP0676734A1 Alerting system and method
08/1995
08/22/1995US5444433 Modular emergency or weather alert interface system
07/1995
07/11/1995US5432542 Television receiver location identification
05/1995
05/24/1995DE4339662A1 Danger situation alarm and information transmission apparatus
03/1995
03/23/1995WO1995008243A1 A video and audio alerting system for a cable television network
01/1995
01/31/1995US5386209 Cluster alarm monitoring system
12/1994
12/13/1994CA1333495C Security system
12/08/1994WO1994028525A1 Method for informing foreign matter content and an apparatus therefor
05/1994
05/18/1994CN1086915A Common antenna audiovisual safety device
04/1994
04/13/1994CN2161958Y Calling alarm device
01/1994
01/11/1994US5278539 Alerting and warning system
07/1993
07/13/1993US5227776 Combined alarm, security and rescue system
04/1993
04/14/1993EP0231291B1 Electronic surveillance system and transceiver unit therefor
09/1992
09/09/1992CN2115562U Speech alarm for traffic control
09/03/1992WO1992015160A1 Storm alert for emergencies
08/1992
08/12/1992EP0308446B1 Combined alarm, security and rescue system
06/1992
06/09/1992US5121430 Storm alert for emergencies
04/1992
04/07/1992US5103206 Security system
03/1992
03/04/1992CN2098061U Accident signal alarm system
10/1991
10/22/1991US5060300 Receiver switchable between network supply mode and power-conserving battery supply mode
07/1991
07/02/1991US5029290 Emergency alert system
03/1991
03/14/1991DE3929245A1 RDS data continuous recording appts. - has head frequency controlled by RDS message, and speed set for all-day monitoring
12/1990
12/05/1990CN1047579A Double coding control method in panalarm
09/1990
09/18/1990US4958154 System for wireless remote actuation of differing siren programs
09/11/1990US4956875 Emergency radio alerting and message transmitting system directable to selected classes and numbers of receivers
08/1990
08/16/1990EP0381937A2 Warning messages reproduction system
08/14/1990CA1272773A1 Electronic surveillance system and transceiver unit therefor
06/1990
06/28/1990WO1990007170A1 Security and alarm system
06/13/1990CA2005312A1 Security and alarm system
06/12/1990US4933852 Machine operation indicating system and method
02/1990
02/07/1990EP0353438A1 In motion setting device for radio controlled sirens working in accordance with different programs
01/1990
01/04/1990DE3921658A1 Automatisches schutzsystem Automatic protection system
12/1989
12/12/1989US4887072 Alarm apparatus
11/1989
11/14/1989US4881058 Combined audible and visual alarm system
10/1989
10/25/1989CN2046655U Multichannel tv auto-monitoring alarm
10/18/1989CN2046251U Digital coding multiway radio warning device
08/1989
08/23/1989EP0328985A2 Warning radio receiver
06/1989
06/15/1989DE3741353A1 System for the immediate communication of items of information to receiving stations
03/1989
03/29/1989EP0308446A1 Combined alarm, security and rescue system.
03/21/1989CA1251585A1 Interphone system with security function
03/14/1989US4812820 Electronic surveillance system and transceiver unit therefor
03/14/1989EP0231291A4 Electronic surveillance system and transceiver unit therefor.
12/1988
12/21/1988EP0296022A1 Bus-addressing device
09/1988
09/27/1988US4774658 For transmitting event information
09/22/1988WO1988007245A1 Combined alarm, security and rescue system
04/1988
04/20/1988EP0147385B1 A locality supervision system
03/1988
03/08/1988US4730184 Neighborhood audio-visual alarm system
11/1987
11/24/1987US4709330 System for supervising and guiding persons in construction
11/03/1987CA1228904A1 Fire alarm control and emergency communication system
08/1987
08/26/1987EP0233576A1 Alarm-system
08/12/1987EP0231291A1 Electronic surveillance system and transceiver unit therefor.
07/1987
07/22/1987EP0229198A1 Neighbourhood alarm
06/1987
06/16/1987US4673920 Fire alarm control and emergency communication system
04/1987
04/21/1987US4660023 Locality supervision system
04/07/1987US4656652 Emergency warning device for use in a party line telephone system or the like
01/1987
01/29/1987WO1987000711A1 Electronic surveillance system and transceiver unit therefor
05/1986
05/06/1986CA1204062A1 Console priority control
02/1986
02/18/1986CA1200847A1 Public alert and assistance systems
12/1985
12/24/1985US4560978 Communication system and method
07/1985
07/17/1985EP0148708A1 Security device for the surveillance of premises, particularly of dwellings
07/10/1985EP0147385A1 A locality supervision system.
06/1985
06/26/1985EP0146372A2 Emergency warning device
06/12/1985EP0144250A2 Fire alarm systems with incipient hyper-sensitivity monitoring
05/1985
05/21/1985US4518822 Method and apparatus for automatically establishing telephone communication links
04/1985
04/23/1985US4513284 Console priority control
10/1984
10/09/1984US4476488 Control circuit for CATV alert system
06/1984
06/19/1984US4455551 Synthetic speech communicating system and method
06/07/1984WO1984002216A1 A locality supervision system
03/1984
03/07/1984EP0102229A1 Alarm system
01/1984
01/10/1984CA1160315A1 Community alarm system
11/1983
11/15/1983US4415771 Public alert and advisory systems
08/1983
08/03/1983EP0084685A1 Alarm control center
07/1983
07/05/1983US4392248 Attention signal receiver for emergency broadcast systems
09/1982
09/02/1982WO1982002971A1 Electronic warning system
09/1981
09/08/1981US4288789 Alarm system with verbal message
01/1981
01/27/1981US4247846 Alarm notification apparatus
01/07/1981EP0021232A1 Device for a burglary alarm system
11/1980
11/04/1980US4232292 Data transmitter device
10/1980
10/14/1980CA1087715A1 Multi-satellite intrusion alarm control system
06/1980
06/10/1980US4207558 Interconnection circuit for a plurality of alarm units
04/1980
04/15/1980US4198624 Alarm system
05/1979
05/15/1979US4155042 Disaster alert system
05/08/1979US4153881 Early flood warning system
02/1979
02/13/1979US4139843 Alarm system
11/1978
11/28/1978US4127852 Power use alarm
08/1978
08/15/1978US4107464 Alarm communications system
07/1978
07/25/1978US4103235 Two-tone attention signal broadcasting system
05/1978
05/30/1978US4092599 Annunciator communication system
03/1978
03/14/1978USRE29580 Integrated fully supervised fire alarm system
03/14/1978US4079317 Safeguard sentry
02/1978
02/21/1978US4075659 Electronic door announcer
01/1978
01/03/1978US4067004 Remote personnel station alarm system
12/1977
12/20/1977US4064508 Alarm system including remote signalling means
1 2 3 4 5 6 7 8 9 10 11 12