| 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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| 08/22/1990 | CN2060920U Urinowetting alarms |
| 08/21/1990 | US4951047 Negative climb after take-off warning system |
| 08/21/1990 | US4951032 Crib rail safety annunciator |
| 08/15/1990 | CN2060577U Urinate alarm |
| 08/15/1990 | CN2060576U Earthquake alarming and phone calling apparatus |
| 08/14/1990 | US4949072 Dive parameter indicating assembly |
| 08/14/1990 | US4949069 Dynamic liquid level indicator |
| 08/08/1990 | CN2060245U Overtemp. excess presssure alarm for boiler |
| 08/08/1990 | CN2060244U Multi-functional frost-proof alarm for child |
| 08/07/1990 | US4947164 Flight path responsive aircraft wind shear alerting and warning system |
| 08/07/1990 | US4947155 Leakage resistance detector and alarm circuit |
| 08/07/1990 | US4947152 Patient monitoring system |
| 07/31/1990 | US4945347 Motion and orientation responsive device for seismic, intrusion, and tilt alarms and the like |
| 07/31/1990 | US4945346 Audible circuit tracer |
| 07/31/1990 | US4945341 Alarm system for electrical devices |
| 07/26/1990 | WO1990008371A1 Photographic security system |
| 07/24/1990 | US4943929 Chemical agent monitor and control interface |
| 07/24/1990 | US4943777 Battery voltage warning device |
| 07/18/1990 | EP0378301A2 Transmitter/receiver apparatus |
| 07/18/1990 | CN1008835B Method of phase-opening time counting and its equipments |
| 07/17/1990 | CA1271823A1 Pocket alarm |
| 07/12/1990 | WO1990007761A1 Multi-state selection switch for personal emergency response system |
| 07/11/1990 | CN2059259U Warner for vehicle spare tyre loosening |
| 07/10/1990 | US4940965 Vocal alarm for outboard engine |
| 07/03/1990 | CA1271248A1 Surveillance system |
| 06/28/1990 | DE3843043A1 Management method and device for disaster and environmental protection |
| 06/20/1990 | CN1043202A Automatic alarm for leakage danger voltage |
| 06/19/1990 | US4934972 Water skier safety alarm |
| 06/06/1990 | CN2058027U High voltage electrified alarm with electromagnetic lock |
| 06/05/1990 | US4932009 Apparatus and method for detecting swimmers |
| 06/05/1990 | US4931777 Low level alarm for drop-feed injection liquid |
| 06/05/1990 | US4931775 Plant watering need monitor |
| 06/05/1990 | US4931773 Shoe fitting system |
| 06/05/1990 | US4931772 Safety monitor |
| 05/30/1990 | EP0370790A1 Protecting device |
| 05/29/1990 | US4929927 Surveillance installation |
| 05/23/1990 | EP0369662A2 Location monitoring of movable objects |
| 05/23/1990 | CA2002972A1 Protecting device for a lock |
| 05/22/1990 | US4928090 Arousal level judging apparatus and method |
| 05/22/1990 | US4927382 Electrical function group for a vehicle |
| 05/17/1990 | DE3907998C1 Arrangement reminding one to lock an entrance door |
| 05/17/1990 | DE3837629A1 Method for monitoring electrical cooling appliances, especially refrigerators or freezers |
| 05/16/1990 | CN2057293U Electricity-consuming monitor |
| 05/15/1990 | US4926159 Apparatus and method for the generation of directionally perceptible sound |
| 05/02/1990 | EP0366538A1 Accidental drowning prevention system |
| 05/02/1990 | CN2056778U Anti-theft alarm for electric appliance |
| 05/01/1990 | US4922231 Temperature responsive signaling device |
| 05/01/1990 | US4922229 System for retrieving and preventing the loss or theft of keys |
| 05/01/1990 | US4922226 Water level and temperature detector alarm device |
| 05/01/1990 | US4922183 Methods, systems and apparatus for detecting changes in variables |
| 04/25/1990 | CN2056529U Over pressure warner for steam boiler |
| 04/19/1990 | WO1990004240A1 Wallet incorporating credit card alarm system |
| 04/18/1990 | EP0363830A1 Electrical installation with a galvanic signal-carrying conductor, and an interference indicator therefor |
| 04/18/1990 | CN2056267U Alarm for infant kicking quilt or urinating |
| 04/18/1990 | CN2056266U Radio musical alarm for urination |
| 04/17/1990 | US4918433 Water immersion alarm belt |
| 04/17/1990 | US4918432 House arrest monitoring system |
| 04/17/1990 | US4918427 Multi-level tool break detection using multi-mode sensing |
| 04/17/1990 | US4918425 Monitoring and locating system for an object attached to a transponder monitored by a base station having an associated ID code |
| 04/10/1990 | US4916613 Remote low power indicator for battery driven apparatus |
| 04/10/1990 | US4916434 Credit card carrier with alarm |
| 04/05/1990 | WO1990003624A1 Apparatus for detecting swimmers |
| 04/05/1990 | WO1990003580A1 Electromagnetic damped inertia sensor |
| 04/03/1990 | US4914436 Ground proximity approach warning system without landing flap input |
| 04/03/1990 | US4914422 Safety system |
| 03/28/1990 | CN2055276U Pre-alarm preventing infants roll-off during sleeping |
| 03/27/1990 | US4912464 Anchor alarm for boats and the like |
| 03/20/1990 | US4910501 Creosote fire alarm system |
| 03/20/1990 | US4910498 Swimming pool safety alarm |
| 03/20/1990 | US4910497 Closure alarm for containment chambers for dangerous materials |
| 03/20/1990 | US4910494 Automotive vehicle control system |
| 03/15/1990 | DE3830655A1 Personal protection device having automatic emergency alarm |
| 03/13/1990 | US4908704 Method and apparatus for obtaining an object image and distance data of a moving object |
| 03/13/1990 | US4907845 Bed patient monitoring system |
| 03/13/1990 | CA1266709A1 No oil warning circuit |
| 03/07/1990 | EP0357539A2 Infra-sonic detector and alarm with self adjusting reference |
| 03/07/1990 | EP0357309A2 Personnel monitoring system |
| 03/06/1990 | US4906977 Pressure gauge with needle actuated alarm |
| 03/06/1990 | US4906972 Communication system for hazardous areas |
| 03/06/1990 | CA1266453A1 Equi crane anti-tipping device |
| 02/28/1990 | CN2053506U Alarm for first-aid |
| 02/27/1990 | US4905000 In an aircraft |
| 02/27/1990 | US4904987 Air sampling and alarm control system |
| 02/27/1990 | US4904985 Mole detector apparatus |
| 02/21/1990 | CN2053356U Watch-type electricity alarm |
| 02/14/1990 | CN2052922U Pressure warner for feeding pipe |
| 02/13/1990 | US4899683 Safety device to indicate if a door/window has been opened |
| 02/07/1990 | CN2052558U Automatic alarming device for faint |
| 02/06/1990 | US4899135 Child monitoring device |
| 02/06/1990 | US4899133 Programmable movement analyzer with a plurality of mercury switches |
| 02/06/1990 | CA1265597A1 Surveillance installation |
| 02/06/1990 | CA1265581A1 Portable electrostatic field safety monitor |
| 01/31/1990 | EP0352593A2 Monitoring device for a ventilator |
| 01/30/1990 | US4897754 Switching apparatus |
| 01/30/1990 | CA1265204A1 Biofeedback system |
| 01/24/1990 | CN2051758U Current limiting alarm |
| 01/23/1990 | US4896144 Hand washing alert |
| 01/23/1990 | US4896142 Moisture detection system for carpet cleaning apparatus |
| 01/23/1990 | US4896099 Method of announcing low level of remaining liquid in dropper |
| 01/17/1990 | CN2051372U Diaphragm monitoring warning device for metering pump |