| Patents for G08B 17 - Fire alarms; Alarms responsive to explosion (10,975) |
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| 01/08/1980 | US4183020 Amplifier with field effect and bipolar transistors |
| 01/08/1980 | CA1069602A1 Fluid flow detector for a fire alarm system |
| 01/01/1980 | US4181439 Smoke detector with a conical ring-shaped radiation region |
| 12/25/1979 | US4180742 Detector with supervisory signal from monitor cell |
| 12/18/1979 | US4179751 Memory apparatus for disaster preventing system |
| 12/18/1979 | US4179606 Flame sensor |
| 12/18/1979 | US4178994 Fire extinguishing system for warehouses |
| 12/11/1979 | US4178592 Fire alarm having a sensor on an extensible arm |
| 12/04/1979 | US4176618 Triggering device for combustion detector |
| 12/04/1979 | CA1067597A1 Smoke detector |
| 11/29/1979 | WO1979001042A1 Apparatus and methods for detecting an incipient fire condition |
| 11/27/1979 | US4176346 Smoke alarm network |
| 11/27/1979 | US4175865 Smoke detector |
| 11/27/1979 | US4175677 Self-contained actuation and detection device |
| 11/27/1979 | US4175437 Fire, temperature or heat detector |
| 11/27/1979 | CA1067175A2 Smoke detector |
| 11/15/1979 | WO1979000918A1 Ionisation detector chamber |
| 10/31/1979 | EP0004912A1 Annunciator of danger |
| 10/31/1979 | EP0004911A1 Annunciator of danger |
| 10/31/1979 | EP0004910A1 Annunciator of danger |
| 10/31/1979 | EP0004909A1 Annunciator of danger |
| 10/16/1979 | USRE30117 Ionization-type fire or smoke sensing system |
| 10/16/1979 | US4171490 Photoelectric smoke detector |
| 10/16/1979 | US4171486 Ionization smoke detector with controlled sensitivity |
| 10/16/1979 | CA1064625A1 Fire sensor device |
| 10/09/1979 | US4170770 Gas leak-detecting apparatus |
| 10/09/1979 | US4170189 Sensor element and assembly for thermally responsive apparatus |
| 10/09/1979 | CA1064139A1 Light scattering type smoke detector |
| 10/09/1979 | CA1063993A1 Resettable, heat actuatable fire link |
| 10/02/1979 | US4169661 Thermal-optical converter |
| 10/02/1979 | CA1063697A1 Condition responsive door chime |
| 09/25/1979 | CA1063260A1 Indicating presence of a fire |
| 09/25/1979 | CA1063208A1 Incipient fire detector |
| 09/20/1979 | WO1979000691A1 Thermostat control for heating and/or cooling system |
| 09/18/1979 | US4168497 Fire and smoke sensing system |
| 09/18/1979 | US4168438 Light scattering type smoke detector |
| 09/11/1979 | US4167732 Multi-apartment building combination communication and security circuit |
| 09/11/1979 | US4167687 Smoke detector apparatus and ionization chamber therefor |
| 09/05/1979 | EP0003762A1 Fire detector with a monitor circuit |
| 09/04/1979 | US4166960 Smoke detector |
| 09/04/1979 | US4166955 Radiation detector and method of operating the same |
| 09/04/1979 | US4166698 Secondary light testing in optical smoke detectors |
| 09/04/1979 | US4166380 Quantitative measuring system for combustible gas with audible tick rate |
| 08/22/1979 | EP0003662A2 Single station type fire alarm system and a multivibrator used in the detection circuitry |
| 08/21/1979 | CA1061017A1 Smoke simulating test apparatus for smoke detectors |
| 08/21/1979 | CA1061016A1 Smoke sensing fire alarm |
| 08/14/1979 | US4164736 Apparatus for disabling an alarm after a predetermined operating period |
| 08/07/1979 | US4163969 Variable frequency light pulser for smoke detectors |
| 08/07/1979 | US4163968 Supervised loop alarm radio transmitter system |
| 07/31/1979 | US4163226 Alarm condition detecting apparatus and method |
| 07/31/1979 | CA1059598A1 Radiation detection apparatus |
| 07/24/1979 | US4162489 Fire alarm system comprising a plurality of alarms which may be operated by way of an alarm loop |
| 07/17/1979 | US4161727 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 |
| 07/11/1979 | EP0002868A2 Fire detector |
| 07/03/1979 | US4160246 Wireless multi-head smoke detector system |
| 07/03/1979 | US4160164 Flame sensing system |
| 07/03/1979 | US4160163 Flame sensing system |
| 06/19/1979 | US4158807 Gapped gate charge-flow transistor with a thin film sensor having two modes of conduction within the gapped gate used to sense a property of the ambient environment |
| 06/19/1979 | CA1056931A1 Smoke detector |
| 06/12/1979 | CA1056479A1 Smoke detector and alarm |
| 06/05/1979 | US4157526 Multi-stage heat sensing cable and emergency communication system |
| 05/29/1979 | US4156816 Optical fire-detector |
| 05/15/1979 | US4155081 Rechargeable battery backup power source for an ionization smoke detector device |
| 05/15/1979 | US4154189 Manual release and test apparatus for alarm system |
| 05/08/1979 | US4153840 Double chamber ionization smoke detector |
| 05/02/1979 | EP0001611A2 Apparatus and method for detecting substances and for regulating current |
| 04/24/1979 | US4151522 Count discriminating fire detection system |
| 04/17/1979 | US4150373 Ionization particle detector |
| 04/17/1979 | US4150370 Smoke detector |
| 04/17/1979 | CA1052887A1 Smoke detector |
| 04/10/1979 | US4149162 Battery discriminator circuit for smoke detectors |
| 04/10/1979 | US4149159 Fire detection system |
| 04/03/1979 | US4148022 Chemical smoke or pollutant detector |
| 04/03/1979 | US4148020 Fail-safe alarm system utilizing frequency modulated signal detection |
| 03/27/1979 | US4146803 Fire-responsive control device utilizing thyristors |
| 03/27/1979 | CA1051539A1 Led smoke detector circuit |
| 03/27/1979 | CA1051535A1 Pulsed alarm system |
| 03/13/1979 | US4144459 Smoke detector with test means for simulating a predetermined percentage of smoke |
| 03/13/1979 | US4144458 Smoke detector with test means for simulating a predetermined concentration of smoke |
| 03/13/1979 | CA1050631A1 Photocell smoke detector |
| 02/27/1979 | US4142219 Two-wire system including signal receiving section and detection section with protected relay |
| 02/20/1979 | US4141007 Central alarm conditioning detecting and alerting system |
| 02/20/1979 | CA1049112A1 Alarm control device |
| 02/13/1979 | US4139846 Method and apparatus for supervising battery energy level |
| 02/13/1979 | US4139843 Alarm system |
| 02/13/1979 | US4139770 Smoke alarm |
| 02/06/1979 | US4138670 A.C. powered detecting device with battery backup |
| 02/06/1979 | US4138664 Warning device |
| 01/16/1979 | CA1046654A1 Combustion detection device |
| 01/16/1979 | CA1046608A1 Ultraviolet radiation detector |
| 01/09/1979 | US4134111 Aerosol detector and method |
| 01/02/1979 | CA1045692A1 Optical smoke detector improvements |
| 12/26/1978 | US4131888 Dual projected-beam smoke detector |
| 12/26/1978 | CA1045227A1 Smoke detector |
| 12/19/1978 | US4130083 Activating mechanism for flashlamp article |
| 12/12/1978 | US4129383 Smoke detector and housing assembly therefore |
| 12/12/1978 | US4129030 Sensing apparatus and method |
| 11/28/1978 | CA1043445A1 Infra-red dynamic flame detector |
| 11/21/1978 | US4126790 Strobed smoke detector |
| 11/14/1978 | US4125779 Smoke detector |