| 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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| 10/09/1984 | CA1175674A1 Method of detecting foreign matters mixed in a liquid contained in transparent receptacles and apparatus relevant thereto |
| 10/02/1984 | US4474185 Body movement detector |
| 09/27/1984 | WO1984003775A1 Automatic measuring and alarm apparatus for radioactivity etc |
| 09/26/1984 | EP0119486A1 System and method for detecting driver drowsiness |
| 09/26/1984 | EP0119485A1 Fatigue alarm system and method for an automotive vehicle driver |
| 09/26/1984 | EP0119484A1 Alarm system for a drowsy driver and method of detecting driver drowsiness |
| 09/26/1984 | EP0119483A1 System and method for detecting driver drowsiness of a vehicle |
| 09/05/1984 | EP0117497A2 System and method for detecting driver drowsiness |
| 08/30/1984 | WO1984003261A1 Engine parameter monitoring system |
| 08/29/1984 | EP0117251A2 Combined bell and telephone intercom installation for doors |
| 08/28/1984 | US4468656 Emergency signalling unit and alarm system for rescuing endangered workers |
| 08/21/1984 | US4467391 Monitor for an electrically-controlled system |
| 08/14/1984 | CA1172746A1 Video movement detector |
| 08/14/1984 | CA1172724A1 Combination lock monitoring system |
| 08/08/1984 | EP0114806A1 Improvements in security warning devices |
| 08/07/1984 | US4464653 Combustible gas detection system |
| 08/07/1984 | US4464339 Gas sensor elements and methods of manufacturing them |
| 07/31/1984 | US4463347 Drowsiness alarm system for a vehicle |
| 07/31/1984 | US4463346 Creosote detector |
| 07/24/1984 | US4462030 Electronic apparatus with audible annunciator and alarm lamp |
| 07/17/1984 | US4460928 Electronic apparatus for voice output of stored information |
| 07/10/1984 | US4459584 Automatic liquid level indicator and alarm system |
| 07/10/1984 | US4459583 Alarm system |
| 07/10/1984 | CA1170437A1 Method of manufacturing a combustibles sensor |
| 07/03/1984 | US4458266 Video movement detector |
| 07/03/1984 | CA1170331A1 Detection of fluorescible material on sheet surfaces |
| 06/12/1984 | US4454502 Apparatus for monitoring and signalling system |
| 06/12/1984 | US4453390 Combination lock monitoring system |
| 05/23/1984 | EP0109227A1 Alarm unit |
| 05/23/1984 | EP0109056A1 Rearward obstruction sensing system for automotive vehicle |
| 05/22/1984 | US4450437 Motion alarm system |
| 05/22/1984 | CA1167945A1 Personal monitoring device |
| 05/15/1984 | US4448147 Temperature responsive warning device |
| 05/15/1984 | CA1167546A1 Continuous strip cold detector |
| 05/15/1984 | CA1167281A1 Indicating system for atmospheric pump arrangement |
| 05/02/1984 | EP0107058A1 Apparatus for monitoring the presence of a person in a bed |
| 04/25/1984 | EP0106827A2 Anti-forgetting device |
| 04/17/1984 | CA1165832A1 Moisture sensing device for pipes and the like |
| 04/12/1984 | WO1984001457A1 Apparatus for monitoring the presence of a person in a bed |
| 04/12/1984 | WO1984001431A1 Combustible vapor detection system |
| 04/10/1984 | US4442426 Signal transmission |
| 04/03/1984 | US4441102 Flow sensing apparatus |
| 04/03/1984 | CA1164944A1 Gas sensor elements and methods of manufacturing them |
| 03/28/1984 | EP0104148A2 Apparatus for obtaining electrical signals correlated with the position of a mass of mercury in instruments and the like |
| 03/20/1984 | US4438422 Warning method and system for vehicles |
| 03/20/1984 | CA1164070A1 Wave condition sensing apparatus |
| 03/20/1984 | CA1164049A1 Sensing apparatus |
| 03/13/1984 | US4437115 Object and inspection system |
| 03/13/1984 | US4437090 Apparatus for indicating creosote buildup in a chimney |
| 02/02/1984 | WO1984000428A1 Improvements in security warning devices |
| 01/25/1984 | EP0098913A2 Movement sensor |
| 12/27/1983 | US4422402 Apparatus for detecting the remaining amount of rolled paper |
| 12/27/1983 | CA1159552A1 Surveillance method and apparatus |
| 12/06/1983 | US4419658 Portable combination lamp, smoke detector and power failure alarm |
| 11/29/1983 | US4418337 Alarm device |
| 11/22/1983 | US4417278 Television receiver scrambling system |
| 11/22/1983 | US4417236 Overload detecting device |
| 11/22/1983 | US4416911 Gas sensor elements and methods of manufacturing them |
| 11/22/1983 | US4416155 Electronic noise detectors |
| 11/16/1983 | EP0093810A1 Monitoring the presence of human activity in an environment |
| 11/15/1983 | US4415979 Method and apparatus for detecting the presence of an animate body in an inanimate mobile structure |
| 11/09/1983 | EP0093463A1 System, method and apparatus for protecting objects, individuals and entities |
| 11/09/1983 | EP0093350A1 Optical acoustical apparatus, particularly for personal safety |
| 11/01/1983 | US4413255 Fluid level indicator |
| 10/26/1983 | EP0092068A1 Gas and/or vapour alarm device |
| 10/25/1983 | US4411034 Blanket device with alarm |
| 10/18/1983 | CA1155550A1 Apparatus for the storage and transfer of information |
| 10/11/1983 | CA1155196A1 Connection apparatus for a fire alarm |
| 10/04/1983 | US4408224 Surveillance method and apparatus |
| 10/04/1983 | US4408195 Boundary plane warning system |
| 10/04/1983 | US4408194 Capacitive pressure relief rupture disc monitor |
| 10/04/1983 | US4408193 Wave responsive swimming pool alarm |
| 09/28/1983 | EP0089667A1 Apparatus for finding lost articles |
| 09/13/1983 | US4404641 Maintenance monitor |
| 09/13/1983 | US4404549 Latching portable personal security alarm |
| 09/06/1983 | US4403341 Emergency information communicating device |
| 09/06/1983 | US4403215 Apparatus for automatically monitoring body functions |
| 09/06/1983 | US4403214 Protective device for attachments affixed to electrically operated beds |
| 09/06/1983 | CA1153444A1 Optoelectronic displacement sensor |
| 09/06/1983 | CA1153443A1 Drowsiness control device for drivers |
| 08/23/1983 | CA1152605A1 Leak detection apparatus |
| 08/16/1983 | US4399433 Alarm system for a tissue processor |
| 08/16/1983 | US4399432 Audio signaling device and method |
| 08/16/1983 | US4399428 Thermostat |
| 08/16/1983 | US4398491 Acoustic indicator of vacuum level in containers |
| 07/19/1983 | CA1150359A1 Alarm device with a condition sensor element |
| 07/12/1983 | CA1149901A1 Leak detector for vaporization cooled transformers |
| 07/12/1983 | CA1149900A1 Microwave seed sensor for field seed planter |
| 07/05/1983 | US4392214 Sound-monitoring device for an industrial installation |
| 07/05/1983 | US4392126 Combination buckle and waist alarm |
| 07/05/1983 | US4391203 Security apparatus |
| 06/28/1983 | US4389903 Indicating system for atmospheric pump arrangement |
| 06/01/1983 | EP0080406A1 Method and apparatus for interrogating a combustible gas concentration sensor |
| 05/31/1983 | US4386337 Liquid level sensor |
| 05/31/1983 | CA1147441A1 Garage door operation control apparatus |
| 05/24/1983 | US4384489 Method of monitoring stored nuclear fuel elements |
| 05/17/1983 | US4384283 Method and an apparatus for monitoring the subjection of individual people to harmful gases |
| 05/17/1983 | CA1146660A1 Method of monitoring stored nuclear fuel elements |
| 04/26/1983 | US4381504 Switch and alarm system responsive to sudden movement, angular tilt and vibration |
| 04/26/1983 | US4381434 Pressure operated electric switch and alarm system using such switch |