| Patents for G08B 21 - Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for (34,716) |
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| 04/12/1983 | US4380004 Emergency sound detector device |
| 04/05/1983 | US4379290 Alarm device with a condition sensor element |
| 04/05/1983 | CA1144260A1 Ventilator disconnection alarm |
| 03/29/1983 | US4378476 Pressure operated electric switch and alarm system using such switch |
| 03/09/1983 | EP0073681A2 Improvements relating to position detection devices |
| 03/03/1983 | WO1983000765A1 Fluid level and temperature sensor |
| 03/02/1983 | EP0072787A1 Alarm system |
| 03/01/1983 | US4375289 Apparatus for monitoring a boundary line |
| 03/01/1983 | CA1142247A1 Thermostat |
| 02/23/1983 | EP0072650A2 Component state monitoring |
| 02/23/1983 | EP0072567A2 Boundary plane warning system |
| 02/15/1983 | US4374379 Moisture sensing device for pipes and the like |
| 01/25/1983 | CA1140219A1 Rate of change detection |
| 01/19/1983 | EP0069745A1 Control system for energy consuming installation |
| 01/18/1983 | CA1139881A1 Data acquisition system |
| 01/14/1983 | EP0058693A4 Alarm system for electric fences. |
| 01/11/1983 | CA1139425A1 Object inspection system |
| 12/21/1982 | US4365250 Garage door operation control apparatus |
| 12/15/1982 | EP0067055A2 Specified condition sensing device |
| 12/14/1982 | US4364034 Monitoring system for movement of tunnels and other structures |
| 12/14/1982 | US4364033 Alarming seismometer |
| 12/14/1982 | CA1137599A1 Warning system for traffic routes at an avalanche danger hillside |
| 12/14/1982 | CA1137586A1 Device for automatically monitoring the charge state of power supplies independently of the mains system |
| 12/09/1982 | EP0031345A4 Security apparatus. |
| 12/07/1982 | US4362121 Pressure indicator for pneumatic tires |
| 12/07/1982 | CA1137207A1 Intrusion alarm system |
| 11/30/1982 | US4361834 Safety alarm device |
| 11/24/1982 | EP0065497A1 Inflammable gas detector device |
| 11/16/1982 | US4359724 Eyelid movement detector |
| 11/16/1982 | US4359723 Personal monitoring device |
| 11/16/1982 | US4359722 Earthquake detection system with pendulum switch |
| 11/16/1982 | US4359717 Position-sensitive alarm system |
| 11/10/1982 | EP0064334A2 Temperature surveillance system |
| 11/09/1982 | US4358757 Seismic movement detector responsive in both vertical and horizontal planes |
| 11/09/1982 | US4357892 Apparatus for warning of the increase in draught of a floating article, especially a small boat, in a surrounding liquid |
| 10/26/1982 | US4356479 Enuresis detector and alarm |
| 10/20/1982 | EP0062987A1 Methods of manufacturing combustibles sensors |
| 10/19/1982 | US4355056 Method of manufacturing a combustibles sensor |
| 10/12/1982 | US4354179 Device controlled by inclination of the head of a driver preventing his falling asleep |
| 09/28/1982 | US4352099 Gas sensing unit for use in environment comprising explosive gases |
| 09/28/1982 | CA1132678A1 Remote activated alarm |
| 09/07/1982 | US4348663 Safety assurance system for road vehicles |
| 09/03/1982 | EP0046748A4 Leak detection apparatus. |
| 09/01/1982 | EP0058693A1 Alarm system for electric fences. |
| 08/31/1982 | US4347503 Bedwetting detection device |
| 08/31/1982 | CA1130884A1 Silent wearable signaling device with tactile means to prevent false triggering |
| 08/24/1982 | US4346374 Classroom noise alarm |
| 08/05/1982 | WO1982002608A1 Control system for energy consuming installation |
| 08/03/1982 | US4342274 Steering failure alarm |
| 07/21/1982 | EP0056294A2 Condition sensing arrangement for A.C. machines |
| 07/20/1982 | CA1128169A1 Monitoring system for monitoring a field |
| 07/13/1982 | CA1127518A1 Thermal detection system for failure in electrical apparatus and thermal detecting paint compositions |
| 07/06/1982 | US4338601 Apparatus for the storage and transfer of information |
| 06/29/1982 | CA1126837A1 Fail safe redundant drive shaft apparatus including electrically operative failure detection |
| 06/22/1982 | US4336533 Fluid activated alarm device |
| 06/15/1982 | CA1125858A1 Apparatus and method for detecting substances and regulating current |
| 06/01/1982 | US4333094 Swimming pool alarm |
| 05/13/1982 | WO1982001612A1 Alarm system |
| 05/05/1982 | EP0050628A1 Safety device, particularly for divers |
| 04/29/1982 | WO1982001454A1 Video movement detector |
| 04/27/1982 | CA1122709A1 Crane operation aid |
| 04/20/1982 | US4326199 Autoreferencing liquid level sensing apparatus and method |
| 04/20/1982 | CA1121990A1 Monitor actuating device and reusable fastener therefor |
| 04/14/1982 | EP0049659A1 Method and device for the acoustic control of an industrial installation |
| 04/13/1982 | US4325060 Floating water detector |
| 04/13/1982 | US4325059 Sensor for detecting deleterious conditions |
| 03/31/1982 | EP0048492A2 Drowsiness alarm system for a vehicle |
| 03/30/1982 | US4322721 Self-monitoring warning installation |
| 03/18/1982 | WO1982000936A1 Alarm system for electric fences |
| 03/10/1982 | EP0046748A1 Leak detection apparatus |
| 03/09/1982 | US4319332 Method and apparatus for space monitoring by means of pulsed directional beam |
| 02/23/1982 | US4317045 Flame monitoring apparatus and method |
| 02/23/1982 | CA1118865A1 Quasi-stationary noise cancellation system |
| 02/16/1982 | US4316182 Ventilator disconnection alarm |
| 02/16/1982 | US4315594 Connection apparatus for a fire alarm |
| 02/02/1982 | CA1117620A1 Cyclone monitoring apparatus and method |
| 01/12/1982 | CA1116264A1 Method of transmitting a plurality of information signals on a common carrier frequency range from different transmitters to a receiver |
| 01/05/1982 | US4309663 Rate of change detection |
| 01/05/1982 | CA1115805A1 Method and apparatus for producing uniform electromagnetic fields in an article detection system |
| 12/29/1981 | CA1115372A1 Multi-function combustion detecting device |
| 12/23/1981 | EP0041952A1 Danger detection device with detector. |
| 12/16/1981 | EP0041755A1 Temperature responsive warning device |
| 11/24/1981 | US4302753 Multi-function combustion detecting device |
| 11/12/1981 | WO1981003158A1 Safety device,particularly for divers |
| 11/10/1981 | US4300131 Device for indicating an abnormal condition in an ultrasonic nebulizer |
| 11/10/1981 | US4300129 Silent wearable signalling device with tactile means to prevent false triggering |
| 11/10/1981 | US4300121 Warning system for traffic routes at an avalanche danger hillside |
| 11/03/1981 | US4298955 Method of and apparatus for the detection and analysis of hazards |
| 11/03/1981 | CA1111921A1 Inductive position sensor failure detector |
| 10/27/1981 | US4297690 Earthquake alarm system |
| 10/27/1981 | US4297687 Leak detection apparatus |
| 10/27/1981 | US4297686 Water detection device |
| 10/27/1981 | US4297685 Apparatus and method for sleep detection |
| 10/27/1981 | US4297678 Aircraft safety alarm system |
| 10/13/1981 | US4295133 Apparatus to indicate when a patient has evacuated a bed or demonstrates a restless condition |
| 09/22/1981 | US4291301 Reminder alarm system for preventing mislaying of personal articles |
| 09/03/1981 | WO1981002484A1 Leak detection apparatus |
| 09/01/1981 | US4287503 Running data central display arrangement for motor vehicles and the like |
| 08/25/1981 | CA1107849A1 Visual feed control assembly for carriage fed sawmill saws |
| 08/25/1981 | CA1107834A1 Defect detecting device |