| 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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| 07/18/1989 | US4849742 Toilet seat cover position alarm |
| 07/11/1989 | US4847598 Water treatment regeneration system incorporating alternating current excitation and paired operational amplifiers with asymmetrical feedback elements |
| 07/11/1989 | US4847597 Medicine bottle |
| 07/11/1989 | US4847594 Sensor for detecting the exhaustion of an adsorbent bed |
| 07/11/1989 | EP0218629A4 Method for promoting the vigilance of a motor vehicle operator and use of a suitable apparatus. |
| 07/05/1989 | EP0323041A2 Infant security system |
| 07/04/1989 | USH652 Sensor for detection of liquid spills on surfaces |
| 07/04/1989 | US4845472 Leak sensing alarm and supply shut-off apparatus |
| 07/04/1989 | US4845470 Tamper evident closure apparatus |
| 06/28/1989 | EP0322204A2 Detector unit and system |
| 06/27/1989 | US4843377 Remote confinement system |
| 06/27/1989 | US4843372 Bridge sway and deflection detection system |
| 06/27/1989 | US4843336 Detachable multi-purpose self-defending device |
| 06/27/1989 | US4843327 Branched sensor system |
| 06/22/1989 | DE3741649A1 Stay-awake device for drivers, pilots and watchmen |
| 06/20/1989 | US4841302 Transmitter detector for use in a moving vehicle |
| 06/20/1989 | US4841288 Earthquake illuminating device |
| 06/20/1989 | US4841287 Earthquake utilities cut-off control system |
| 06/20/1989 | US4841282 Smoke and liquid alarm |
| 06/14/1989 | CN2039443U Multifunctional moisture alarm |
| 06/13/1989 | CA1255785A1 Panoramic video surveillance device |
| 06/06/1989 | US4837835 Speaker system for motor vehicles with an alarm device |
| 06/06/1989 | US4837656 Malfunction detector |
| 06/06/1989 | US4837559 Personal security device |
| 05/31/1989 | CN2038386U Recorder type healthy protective box |
| 05/30/1989 | US4835523 Ski beeper |
| 05/30/1989 | US4835520 Talking alarm for openable compartment |
| 05/23/1989 | US4833461 Utility shut off apparatus |
| 05/23/1989 | US4833452 Safety device and method of establishing group communication |
| 05/18/1989 | DE3824000A1 Mast (pylon, pole) having monitoring device for the protection against mast damage |
| 05/17/1989 | CN2037855U Phase-failure and short-circuit alarm controller |
| 05/16/1989 | US4831361 Environmental abnormality alarm apparatus |
| 05/10/1989 | EP0314949A1 Electrical function group for a vehicle |
| 05/10/1989 | CN2037488U Miniature warner for bed-wetting |
| 05/09/1989 | US4829285 In-home emergency assist device |
| 05/05/1989 | WO1989004030A1 Polyphase circuit fuse condition indicating device |
| 05/03/1989 | EP0313772A2 Combined central locking and burglar alarm for locks on a motor vehicle |
| 05/03/1989 | DE3735994A1 Device for monitoring the pylons of an overhead line |
| 05/03/1989 | CN2037089U Dual function electronic warner for water boiling and door bell |
| 05/03/1989 | CN2037088U Stop moving (stop running) warner |
| 05/03/1989 | CN2037087U Electronic wet warner for napkin |
| 05/02/1989 | US4827246 Hydrocarbon and water level sensor system used to monitor underground storage sites |
| 04/26/1989 | EP0313162A2 Control and remote control of a switchable battery-fed device by the approach to or the departure from the vicinity by a user |
| 04/25/1989 | US4825195 Method of monitoring to anticipate the triggering of an alarm |
| 04/19/1989 | EP0312449A1 Device for controlling the presence of picture information in a video signal |
| 04/12/1989 | CN2035903U Single-phase low-voltage warner for current leakage |
| 04/11/1989 | US4821024 Door operator pre-warning system |
| 04/05/1989 | CN2035516U Monitor for sitting posture |
| 04/05/1989 | CN2035515U Lateral diviation warner for longitudinal operation strip materials |
| 04/05/1989 | CN2035514U Acccumulator discharge warner for automobile |
| 04/05/1989 | CN2035513U Electronic warner for urine in diaper |
| 04/04/1989 | US4818976 Device for monitoring hydrocarbons in groundwater |
| 04/04/1989 | US4818974 Robbery in process warning system |
| 03/29/1989 | CN2035122U Sleep warner |
| 03/21/1989 | US4814753 Attitude detection device |
| 03/21/1989 | US4814752 Overflow water containment pedestal with high level sensor and shutoff |
| 03/21/1989 | US4814751 Person monitoring system |
| 03/21/1989 | US4813759 Fiber optic high and low level alarms |
| 03/21/1989 | CA1251585A1 Interphone system with security function |
| 03/16/1989 | DE3808260C1 Screen device |
| 03/15/1989 | EP0306577A2 System and method for determining the position of a person or other body |
| 03/15/1989 | CN2034310U Electronic alarm on duty |
| 03/14/1989 | US4812825 Tornado warning system |
| 03/14/1989 | CA1251271A1 Towel cabinet replenishment indication and identification system |
| 03/08/1989 | EP0305982A1 Motion sensing device |
| 03/08/1989 | EP0305450A1 A dive parameter indicating assembly. |
| 02/28/1989 | US4808814 Optical system for sensing fractures in a structural component |
| 02/28/1989 | CA1250462A1 Fiber optic high and low level alarms |
| 02/23/1989 | DE3817504A1 Square-wave generator |
| 02/22/1989 | CN2033143U Wall hanging type earthquake forecast device |
| 02/15/1989 | EP0303481A2 Open fastener detection & warning device |
| 02/15/1989 | CN2032746U Ic flash warner |
| 02/14/1989 | US4804947 Water sensing apparatus |
| 02/14/1989 | US4804944 Hall effect liquid level sensing apparatus and method |
| 02/07/1989 | US4803471 Ventilator monitor and alarm apparatus |
| 02/02/1989 | DE3820445A1 Device for keeping awake motorists, pilots and watchmen |
| 02/02/1989 | DE3722608A1 Device and method for determining and indicating the concentration of cigarette, cigar, pipe and car-exhaust smoke |
| 02/01/1989 | CN2031953U Burglar alarm device with time difference |
| 01/31/1989 | US4801929 Container having audible closure removal signalling |
| 01/31/1989 | US4801925 Alarm transmission system and circuit interception switch |
| 01/31/1989 | US4801922 Low temperature alarm |
| 01/24/1989 | US4800372 Flood alarm |
| 01/24/1989 | US4800371 For protecting water pipes subjected to freezing temperatures |
| 01/18/1989 | CN2031134U Acousto-optic alarm for wine-sensitive power-off |
| 01/18/1989 | CN2031133U Electricity leakage alarm for domestic electric appliance |
| 01/18/1989 | CN1030479A Differential temp. sensor and instrumentation system incorporating same for detecting presence of water |
| 01/10/1989 | US4797666 Method and apparatus for monitoring fluid flow |
| 01/10/1989 | US4797664 Environmental abnormality detection apparatus |
| 01/10/1989 | US4797661 Motion sensing device |
| 01/10/1989 | US4796676 Fluid storage tank system |
| 01/04/1989 | EP0298046A2 Device for measuring, indicating and controlling sound pressure (or sound levels) in an environment |
| 01/04/1989 | CN2030351U Miniature round moisture alarm with high volume of sound |
| 01/03/1989 | US4796017 Low water level alarm for Christmas tree stand |
| 12/28/1988 | CN88218045U Monitor for indicating the setting posture of pupils and illuminating condition |
| 12/28/1988 | CN88208227U Divice used for indicating the sitting posture of pupils illuminating condition |
| 12/28/1988 | CN88102799A Display and fault indicator controlled by semi-automatic mechanical speed variator |
| 12/27/1988 | US4794378 Gravitationally-actuating missing reminder for pocket article |
| 12/21/1988 | CN87214820U Time-temp. comprehensive alarm |
| 12/20/1988 | US4792798 Remote control system for pull-cords |
| 12/15/1988 | EP0235141A4 Ultraviolet radiation monitoring device. |