| Patents for G08B 19 - Alarms responsive to two or more different undesired or abnormal conditions, e.g. burglary and fire, abnormal temperature and abnormal rate of flow (2,746) |
|---|
| 06/26/1984 | CA1169938A1 Alarm system having plural diverse detection means |
| 05/16/1984 | EP0108337A2 Road gritting and salting machine |
| 05/01/1984 | US4446454 Home security system |
| 04/18/1984 | EP0105615A2 Apparatus for the monitoring and warning of environmental health hazards |
| 03/21/1984 | EP0103375A1 Alarm system |
| 03/20/1984 | US4438428 Multiple function personal security alarm |
| 03/13/1984 | CA1163694A1 Road surface condition detection system |
| 03/06/1984 | US4435700 Event detection and indication system |
| 02/22/1984 | EP0101182A2 Piping system surveillance apparatus |
| 01/31/1984 | US4429299 Two-way AC power line communications system |
| 01/19/1984 | WO1984000231A1 Temperature sensitive light reflector particularly ice warning device for road traffic |
| 12/20/1983 | US4422066 Condition sensor interface means |
| 12/13/1983 | US4419952 Temperature indicating device on traffic surfaces |
| 12/06/1983 | US4419658 Portable combination lamp, smoke detector and power failure alarm |
| 11/08/1983 | US4414539 Built-in passive fault detection circuitry for an aircraft's electrical/electronic systems |
| 09/21/1983 | EP0089215A1 Hazard warning device |
| 09/20/1983 | US4404852 Frost sensor |
| 08/02/1983 | CA1151261A1 Two-way ac power line communication system |
| 07/19/1983 | CA1150359A1 Alarm device with a condition sensor element |
| 07/05/1983 | CA1149491A1 Road surface marking system and method of operation thereof |
| 06/21/1983 | CA1148635A1 Proximity detector |
| 06/01/1983 | EP0080092A1 Radiation sensing fire suppression system |
| 05/31/1983 | CA1147441A1 Garage door operation control apparatus |
| 05/25/1983 | EP0079645A1 Device for monitoring ice formation |
| 05/24/1983 | US4385287 Multiple alarm condition detection and signalling |
| 04/05/1983 | US4379290 Alarm device with a condition sensor element |
| 03/29/1983 | CA1143814A1 System condition indicator |
| 02/09/1983 | EP0070844A1 Gating circuit |
| 01/19/1983 | EP0069745A1 Control system for energy consuming installation |
| 01/04/1983 | US4367458 Supervised wireless security system |
| 12/21/1982 | US4365250 Garage door operation control apparatus |
| 12/14/1982 | CA1137580A1 Dual alarm detection on single loop |
| 12/08/1982 | EP0066363A1 Microprocessor-controlled fire sensor |
| 11/30/1982 | US4361826 Clutch alarm system |
| 11/09/1982 | CA1135365A1 Fluid temperature mixing indicator |
| 09/07/1982 | CA1131366A1 Data processing transceiver circuit |
| 08/19/1982 | WO1982002808A1 Gating circuit |
| 08/05/1982 | WO1982002608A1 Control system for energy consuming installation |
| 07/27/1982 | CA1128675A1 Humidity detecting resistor porcelain element and humidity detecting apparatus using the element |
| 07/06/1982 | US4337653 Blowout preventer control and recorder system |
| 06/15/1982 | CA1125885A1 Apparatus and method for detecting wet and icy conditions on the surface of a pathway |
| 05/11/1982 | US4329682 Phase change warning devices |
| 04/27/1982 | US4327286 Method and apparatus for measuring the risk of ice formation |
| 04/20/1982 | US4326197 Proximity detector |
| 04/20/1982 | CA1122323A1 Early ice-warning device |
| 04/13/1982 | US4324184 Temperature control system and method for an automated guideway transit system |
| 03/23/1982 | US4321591 Portable, self-powered multiple warning device |
| 03/16/1982 | CA1120122A1 Ice sensor for power lines |
| 03/09/1982 | US4319229 Alarm system having plural diverse detection means |
| 02/02/1982 | US4314239 Portable electronic alarm device |
| 01/19/1982 | CA1116699A1 Fail-safe alarm system utilizing frequency modulated signal detection |
| 01/12/1982 | US4310825 Voice warning system for an automotive vehicle |
| 01/12/1982 | CA1116304A1 Data processing protocol system |
| 01/05/1982 | US4308911 Residential monitoring and control system |
| 12/23/1981 | EP0041952A1 Danger detection device with detector. |
| 08/12/1981 | EP0033525A2 Traffic area temperature indication device |
| 07/28/1981 | US4281286 Apparatus and method for detecting wet and icy conditions on the surface of a pathway |
| 07/22/1981 | EP0032169A1 Signalling arrangement operating with electromagnetic radiation |
| 06/16/1981 | US4274091 Road surface ice detector and method for vehicles |
| 05/28/1981 | WO1981001470A1 Apparatus and method for detecting wet and icy conditions on the surface of a pathway |
| 04/28/1981 | US4264904 Fire and absence detection and alarm system for bed occupants |
| 04/28/1981 | US4264892 Alarm device |
| 03/24/1981 | US4258359 Portable protective device |
| 03/24/1981 | US4258357 Alarm signalling systems |
| 03/17/1981 | US4257038 Coded security system |
| 03/05/1981 | WO1981000636A1 Detection device with detector |
| 03/03/1981 | CA1096954A1 Monitoring arrangement for monitoring a change from a normal condition of any one of a plurality of condition sensing devices |
| 02/10/1981 | CA1095607A1 Microwave ice detector |
| 02/03/1981 | US4248052 Flow sensor and defrost system including same |
| 01/28/1981 | EP0022917A1 Hollow delineator post |
| 01/07/1981 | EP0020602A1 Event detection and indication system |
| 12/11/1980 | WO1980002705A1 Road signpost with reflector movable for the cleaning |
| 11/25/1980 | CA1090483A1 High output smoke and heat detector alarm system utilizing a piezoelectric transducer and a voltage doubling means |
| 11/18/1980 | US4234866 Centralized alarm system for vehicles |
| 10/15/1980 | EP0017547A1 Proximity detector and use thereof |
| 10/14/1980 | US4227577 Fire-extinguishing system |
| 10/07/1980 | US4227045 Data processing protocol system |
| 09/16/1980 | US4223302 Conditions monitoring device |
| 09/09/1980 | US4222044 Early ice-warning device |
| 08/05/1980 | CA1083242A1 Monitor and alarm apparatus in loop line system |
| 07/22/1980 | US4214227 Instrument panel assembly |
| 06/24/1980 | US4209840 Data processing protocol system |
| 06/12/1980 | WO1980001214A1 Event indication and indication system |
| 06/03/1980 | US4206450 Fire and intrusion security system |
| 05/20/1980 | US4204201 Modular alarm system |
| 04/29/1980 | CA1076678A1 Fire-extinguishing system |
| 04/15/1980 | US4198625 Dual alarm detection on single loop |
| 03/25/1980 | US4195287 Fire and absence detection and alarm system for bed occupants |
| 03/11/1980 | US4193060 Control circuit for a tone generator |
| 01/22/1980 | US4185277 Trip alarm circuit |
| 12/12/1979 | EP0005696A1 Slippery road alarming device |
| 10/16/1979 | CA1064594A1 Fire and intruder detection and alarm apparatus |
| 10/02/1979 | CA1063708A1 Instrument panel assembly |
| 09/18/1979 | US4168494 Livestock confinement structure monitor |
| 09/18/1979 | US4168493 Alarm system for a multi-facet installation |
| 09/04/1979 | US4167003 Operation and command failure monitor |
| 08/14/1979 | US4164736 Apparatus for disabling an alarm after a predetermined operating period |
| 08/07/1979 | US4163968 Supervised loop alarm radio transmitter system |
| 06/05/1979 | CA1056033A1 Alarm system with repeat of alarm interrupted for priority alarm |
| 05/15/1979 | US4155042 Disaster alert system |