| Patents for G08B 21 - Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for (34,716) |
|---|
| 08/18/1981 | US4284986 Shirt-pocket medical alert device |
| 08/18/1981 | US4283921 Control and alarm system for freezer case temperature |
| 07/22/1981 | EP0032169A1 Signalling arrangement operating with electromagnetic radiation |
| 07/14/1981 | US4278968 Door status detector apparatus |
| 07/08/1981 | EP0031345A1 Security apparatus. |
| 07/07/1981 | US4276758 Fail safe redundant drive shaft apparatus including electrically operative failure detection means |
| 06/23/1981 | US4275383 Patient signalling system |
| 06/09/1981 | US4272764 Self contained head mountable sleep inhibiting device |
| 06/02/1981 | US4271406 Bed wetting tattler |
| 06/02/1981 | US4271352 Lost personal accessory return method and article |
| 06/02/1981 | US4270800 Pre-start warning device for a machine |
| 06/02/1981 | CA1102412A1 Fault monitoring and indicator system |
| 06/02/1981 | CA1102382A1 Pressure operated electric switch and an alarm system using such switch |
| 05/26/1981 | CA1101962A1 Humidity sensor alarm unit |
| 05/19/1981 | US4268824 Plant soil moisture level-signaling device for household and commercial use |
| 05/05/1981 | US4266221 Personnel alarm circuit for industrial machinery |
| 04/28/1981 | US4264904 Fire and absence detection and alarm system for bed occupants |
| 04/28/1981 | US4264902 Moisture alarm |
| 04/28/1981 | US4264901 Moisture detecting and alarm device |
| 04/21/1981 | US4263587 Liquid level control system |
| 04/14/1981 | US4262289 Seismic tremor sensor alarm |
| 04/14/1981 | CA1099366A1 Roof alarm |
| 04/08/1981 | EP0026681A1 Drive shaft coupling |
| 04/07/1981 | US4260981 Physical condition monitoring system for detection in remote places |
| 04/01/1981 | EP0025815A1 Method for monitoring extension in stressed components |
| 03/31/1981 | US4259665 Driver sleep or fatigue alarm |
| 03/31/1981 | US4259664 Taxicab robbery alerting system |
| 03/10/1981 | US4255745 Apparatus for audible altering of enclosure opening |
| 03/10/1981 | US4255669 Sensing apparatus |
| 03/05/1981 | WO1981000636A1 Detection device with detector |
| 03/03/1981 | US4254485 Temperature measuring apparatus with alarm device |
| 02/24/1981 | US4253084 Snap switch alarm |
| 01/22/1981 | WO1981000043A1 Security apparatus |
| 01/20/1981 | US4246575 Moisture detector |
| 01/07/1981 | EP0021190A1 Device for individually checking the exposure of a person to toxic gases |
| 01/06/1981 | CA1093215A1 Charge-flow transistor and instrument employing the same |
| 01/06/1981 | CA1093126A1 Switch means for radio alarm device |
| 12/30/1980 | US4242672 Patient monitoring system and switch |
| 12/30/1980 | US4242670 Photosensitive alarm systems |
| 12/23/1980 | US4241337 Appliance door position sensor arrangement |
| 12/16/1980 | US4240077 Thermostat |
| 12/10/1980 | EP0020165A1 Personal monitoring device |
| 11/25/1980 | US4236181 Defect detecting device |
| 11/25/1980 | US4236180 Monitoring system for monitoring a field |
| 11/25/1980 | US4236141 Automatic fastening and alarming circuit for a vehicle seat belt |
| 11/18/1980 | US4234879 Plug-type switch |
| 11/12/1980 | EP0018619A1 Security arrangement with at least one wire rope net for protecting objects situated behind it |
| 11/04/1980 | US4232308 Wireless alarm system |
| 10/29/1980 | EP0018206A1 Method of monitoring stored nuclear fuel elements |
| 10/28/1980 | US4231030 Safety device for a crib |
| 10/21/1980 | US4229733 Exposure detecting device |
| 10/15/1980 | EP0016833A1 Silent wearable signalling device for tactile means to prevent false triggering |
| 10/14/1980 | US4228426 Hospital bed monitor |
| 10/01/1980 | EP0016351A1 Gas detection device for use in an environment where explosions may occur |
| 10/01/1980 | EP0016149A1 Switch means for radio alarm device |
| 10/01/1980 | EP0016109A1 Crane operating aid with operator interaction |
| 09/23/1980 | US4224609 Driving assurance system for wheeled vehicles |
| 09/09/1980 | US4222030 Electric control circuit for safety apparatus in automotive vehicles |
| 09/03/1980 | EP0014702A1 Electrically isolated illumination control for dental drill |
| 09/02/1980 | US4220871 Electric control circuit for safety apparatus in automotive vehicles |
| 08/26/1980 | US4219800 Reminder for vehicle drivers |
| 08/20/1980 | EP0014251A1 Coupling device for fire-alarm |
| 08/05/1980 | CA1082962A1 High output audible alarm device utilizing a piezoelectric transducer and voltage doubling means |
| 07/08/1980 | US4212005 Movement detector |
| 06/24/1980 | CA1080334A1 Fail safe vehicle proximity sensing and control system |
| 06/17/1980 | US4208579 Electrically isolated control means for the illuminating source of a dental drill |
| 06/11/1980 | EP0011625A1 Thermostat control for heating and/or cooling system |
| 06/10/1980 | US4207562 Apparatus for determining optimum hay baling conditions |
| 05/28/1980 | EP0011087A1 Alarm device, particularly for automotive vehicles |
| 05/13/1980 | US4203101 Electric power interrupting apparatus |
| 05/13/1980 | US4203099 Sensor for soft drink dispenser |
| 05/13/1980 | US4203098 Device for preventing dozing while driving a car |
| 05/13/1980 | US4203097 Pool alarm device |
| 05/06/1980 | CA1076917A1 Oxygen monitor and warning device for an aircraft breathing system |
| 04/22/1980 | CA1076232A1 Means for detecting leakage in the inner lining of tanks and piping |
| 04/16/1980 | EP0009901A1 Alarm system |
| 04/15/1980 | US4198653 Video alarm systems |
| 04/03/1980 | WO1980000629A1 Silent wearable signalling device for tactile means to prevent false triggering |
| 04/01/1980 | US4196429 Motion detector |
| 04/01/1980 | US4196425 Patient activity monitoring system |
| 03/25/1980 | US4195287 Fire and absence detection and alarm system for bed occupants |
| 03/25/1980 | CA1074417A1 Semi-dump trailer level indicator |
| 03/20/1980 | WO1980000516A1 Switch means for radio alarm device |
| 03/11/1980 | US4193068 Hemorrhage alarms |
| 03/04/1980 | US4191949 Belt having a posture warning device |
| 03/04/1980 | US4191947 Intrusion alarm system |
| 02/19/1980 | US4189725 Battery powered condition sensing and display apparatus with low battery indication |
| 02/19/1980 | US4189722 Swimming pool intrusion alarm system |
| 02/19/1980 | US4189721 Personal alarm system |
| 02/12/1980 | US4188622 Garbage can alarm |
| 02/05/1980 | US4187504 Fault monitoring and indicator system |
| 02/05/1980 | US4187503 Sump alarm device |
| 02/05/1980 | US4187502 Swimming pool alarm system |
| 01/24/1980 | WO1980000076A1 Crane operating aid with operator interaction |
| 01/22/1980 | US4185267 Detecting water on boat exhaust manifold |
| 01/22/1980 | US4185224 Alarm system for dispensing systems |
| 01/22/1980 | CA1070410A1 Sensing circuit |
| 01/15/1980 | US4184205 Data acquisition system |
| 12/18/1979 | US4179692 Apparatus to indicate when a patient has evacuated a bed or demonstrates a restless condition |
| 12/11/1979 | US4178591 Crane operating aid with operator interaction |