| 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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| 03/12/1991 | US4999613 Remote confinement system |
| 03/12/1991 | US4999611 Towel cabinet replenishment indication and identification system |
| 03/12/1991 | US4999606 Underwater transmitter/receiver |
| 03/12/1991 | US4999516 Combined bias supply power shut-off circuit |
| 03/12/1991 | US4999117 Monitoring method for wastewater pump station and compatible apparatus |
| 03/07/1991 | DE3929520A1 Danger warning device for cattle stalls - shows measured difference between internal and external temp. as moving light strip |
| 03/05/1991 | US4998096 Multipurpose alarm device |
| 03/01/1991 | WO1991003744A1 Headgear-mounted indicator for ionizing radiation |
| 03/01/1991 | CA2065411A1 Headgear-mounted indicator for ionizing radiation |
| 02/28/1991 | DE3928075A1 Warning appts. for refrigeration plant - detects evaporation pressure and/or temp. and compares it with ambient temp. and alarm valve |
| 02/27/1991 | EP0413803A1 Electronic monitoring arrangement |
| 02/27/1991 | CN2072254U Alarm for protecting baby |
| 02/26/1991 | US4996519 Method and apparatus for monitoring an amplifier |
| 02/26/1991 | US4995606 Board game |
| 02/21/1991 | DE4023649A1 Procedure and equipment for detection of dangerous gases - uses radiation source and detectors to provide raw data which is compared with reference values |
| 02/20/1991 | EP0190345B1 Ground proximity warning system for use with aircraft having degraded performance |
| 02/20/1991 | CN1049421A Electronic eyesight protecting unit |
| 02/19/1991 | US4994800 Snap-in housing for backup alarm |
| 02/19/1991 | US4994792 Fluid temperature monitoring system |
| 02/08/1991 | CA2021999A1 Audible circuit tracer |
| 02/06/1991 | EP0233269B1 Surveillance installation |
| 02/06/1991 | CN2070624U Protector for children's vision |
| 02/05/1991 | US4991145 Infra-sonic detector and alarm with self adjusting reference |
| 02/05/1991 | US4990893 Method in alarm system, including recording of energy consumption |
| 01/30/1991 | EP0410071A1 Gastight full protection garment with internal measuring and warning apparatus |
| 01/30/1991 | CN2070481U Daybreak reporting electronic device |
| 01/29/1991 | US4988979 Fault inspection system for rotary machines |
| 01/27/1991 | CA2016041A1 Gas-tight fully protective suit comprising a measuring and alarm instrument worn under the suit |
| 01/24/1991 | DE4021853A1 Ion selective sensor with failure indication - uses pH selective glass bulb with amplifier connected to output producing zero voltage if tube rupture occurs |
| 01/23/1991 | CN2070018U Protector for children's hygiene |
| 01/22/1991 | US4987589 Entrance telephone system utilizing the public subscriber telephone network |
| 01/22/1991 | US4987409 Level sensor and alarm |
| 01/22/1991 | US4987408 Water sensor system |
| 01/18/1991 | WO1991001594A1 Combined bias supply and power shut-off circuit |
| 01/18/1991 | CA2064085A1 Combined bias supply and power shut-off circuit |
| 01/09/1991 | EP0407186A2 Work station monitor |
| 01/08/1991 | US4983954 Shock hazard warning device |
| 01/02/1991 | CN2068707U Automatic monitor for posture of learning children and brightness |
| 12/27/1990 | EP0404280A1 System and method for determining the position of a person or other body |
| 12/25/1990 | US4980671 Remote confinement system with timed tamper signal reset |
| 12/25/1990 | US4980668 Motor vehicle control system |
| 12/20/1990 | DE3921951A1 Dosage warning device for solar irradiation of human body - has solar radiation sensor signal integrator triggering acoustic sampler after defined integration interval |
| 12/19/1990 | CN1010911B Arrangement for fault indication |
| 12/18/1990 | US4978948 Combined earthquake sensor and night light |
| 12/18/1990 | US4978946 Personal security communication system |
| 12/13/1990 | DE3922943C1 Immersed safety monitor for swimming pool - has funnel-shaped housing intercepting wave motion with cover as integral part of alarm arrangement |
| 12/13/1990 | DE3919091A1 Alarm arrangement with signal device generating signal when required - i.e. when distance between warning and monitoring device exceeds threshold value |
| 12/05/1990 | CN2067006U Alarm for baby's quilt pull off |
| 12/05/1990 | CN1047440A Shoe fitting system |
| 12/04/1990 | US4975682 Meal minder device |
| 12/04/1990 | CA1277400C Anti-theft and locating system |
| 11/29/1990 | WO1990014026A1 Shoe fitting system |
| 11/29/1990 | DE3917069A1 Alarm device for scaring away assailants or intruders - can be operated by wearer to sound electric siren associated with remote stationary or portable receiver |
| 11/27/1990 | US4973947 Self-contained portable flood alarm |
| 11/27/1990 | US4973944 Electrical signal and alarm protection proximity device |
| 11/22/1990 | EP0398509A2 Monitoring circuit |
| 11/20/1990 | US4972177 Fixture for actuating alarm upon change to upright position of recumbent patient |
| 11/20/1990 | CA1276684C Personal safety radio device |
| 11/15/1990 | WO1990013881A1 Liquid monitoring device |
| 11/14/1990 | CN2065780U Multi-function alarming device for transformer substation |
| 11/13/1990 | CA1276259C Attitude detection device |
| 11/08/1990 | DE3914664A1 Exhaustion sensor and indicator e.g. for gas mask - gives real-time warning of saturation of absorbent material by measurement of electrical conductivity of coating |
| 11/06/1990 | US4968976 Alarm kit for a chemical tank of a noncommercial water purification system |
| 11/01/1990 | WO1990013101A1 Remote confinement system with timed tamper detection reset |
| 10/31/1990 | CN2064656U Alarm device for medical intravenous drip syringe liquid surface |
| 10/30/1990 | US4967188 Method for detecting low battery voltage in portable scanning systems |
| 10/30/1990 | US4967186 Method and apparatus for fatigue detection |
| 10/27/1990 | WO1990013197A1 Remote confinement system |
| 10/27/1990 | CA2051666A1 Remote confinement system |
| 10/24/1990 | CN2064522U Infusion alarms with no touchpoints |
| 10/24/1990 | CN2064169U Alarm trousers for defecation |
| 10/23/1990 | US4965572 Method for producing a warning of the existence of low-level wind shear and aircraftborne system for performing same |
| 10/23/1990 | US4965553 Calorie counter |
| 10/15/1990 | WO1990013102A1 Method and apparatus for testing personal barriers |
| 10/15/1990 | CA2072101A1 Method and apparatus for testing personal barriers |
| 10/11/1990 | DE4008697A1 Multi-level tool break detection using multi-mode sensing - senses cutting tool vibration signal which is processed using pattern recognition to detect high and low frequency transients |
| 10/10/1990 | EP0391580A2 A solvent responsive signal-carrying device |
| 10/10/1990 | CN2063672U Healthy device for student |
| 10/09/1990 | US4962371 CPS alarm system |
| 10/05/1990 | CA2011851A1 Alarm system for electrical devices |
| 09/25/1990 | US4959637 Emergency signaling device |
| 09/25/1990 | US4959569 Stator coil water system early alert hydrogen leakage monitor |
| 09/20/1990 | WO1990010921A1 A method for detecting external influence on an optical cable |
| 09/18/1990 | US4958145 Back incline indicator |
| 09/12/1990 | EP0386495A2 Motor vehicle with a security system |
| 09/12/1990 | CN2062090U Leakage pre-alarm protector for multi-loop electric equipment |
| 09/12/1990 | CN2062089U Multi-function alarm for accident of automobile wheel |
| 09/11/1990 | US4956635 Method and apparatus for testing personal barriers |
| 09/07/1990 | WO1990010294A1 Snap-in housing for backup alarm |
| 09/07/1990 | WO1990010282A1 Method and apparatus for detecting airborne allergen particulates |
| 09/07/1990 | WO1990010281A1 A bed alarm |
| 09/07/1990 | WO1990010280A1 Electronic monitoring arrangement |
| 09/07/1990 | WO1990010204A1 A pressure sensor |
| 09/04/1990 | US4954836 Follow-up system for moving bodies |
| 09/04/1990 | US4954810 Garage door openers |
| 08/29/1990 | CN2061312U Alarm for sleeping baby in case of explosing to air |
| 08/28/1990 | US4953111 Detecting blinks of an eye |
| 08/28/1990 | US4952928 Adaptable electronic monitoring and identification system |
| 08/28/1990 | US4952915 Failed electrical component detector for multiphase electric machines |
| 08/23/1990 | WO1990009298A1 Process for releasing restraining means |