| Patents for G01F 23 - Indicating or measuring liquid level, or level of fluent solid material, e.g. indicating in terms of volume, indicating by means of an alarm (31,056) |
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| 02/11/1988 | DE3627123A1 Liquid level sensor |
| 02/11/1988 | DE3627116A1 Liquid level sensor |
| 02/11/1988 | DE3627109A1 Liquid level sensor |
| 02/11/1988 | DE3626285A1 Device for transmitting a fluid level to a signal transmitter |
| 02/10/1988 | CN86210533U Device for detecting the level of waste toning agent |
| 02/10/1988 | CN86105575A Arrangement for capacitive level measuring in container |
| 02/10/1988 | CN86105521A Device for determination and/or control of certain charging level in container |
| 02/09/1988 | USRE32593 Separate lubricating system for marine propulsion device |
| 02/09/1988 | US4724415 For a liquid contained in a reservoir |
| 02/09/1988 | US4723446 Device for measuring displacement |
| 02/09/1988 | CA1232683A1 Measuring method and device for the liquid and gaseous flows of a two phased flowing fluid |
| 02/09/1988 | CA1232467A1 Fluid level gauge having magnetic sensor |
| 02/04/1988 | DE3625779A1 Apparatus for determining a specific level in a container |
| 02/03/1988 | EP0255143A2 Trouble detecting circuit for resistive sensor type indicator |
| 02/03/1988 | CN87203322U Heteromorphic tube type colour level gauge |
| 02/03/1988 | CN87203116U High accurate digital display level gauge |
| 02/02/1988 | US4722605 Method and apparatus for optically measuring distance between two surfaces |
| 02/02/1988 | US4722228 Remote seal-type pressure signal generator |
| 01/28/1988 | DE3623741A1 Vibrating rod limit switch for level measurement of liquids and loose material |
| 01/26/1988 | US4721941 Oil gauge accessory for automotive vehicles |
| 01/26/1988 | US4720997 Material level monitor |
| 01/26/1988 | CA1232046A1 Sensor assembly for a radiator mounted coolant level monitoring system |
| 01/20/1988 | CN87207917U Heigh pressure resisting thin-walled open float |
| 01/20/1988 | CN87202030U Vertical line transducer |
| 01/20/1988 | CN87201821U Spring-pulling thread type liquidometer |
| 01/20/1988 | CN87201257U Optical fiber liquidometer |
| 01/19/1988 | US4720799 Hydrologic data acquisition system |
| 01/19/1988 | US4719799 Pressure sensor |
| 01/13/1988 | CN87201035U Electric heating type liquid interface level probe |
| 01/13/1988 | CN86104610A Optical fibre interface detector |
| 01/12/1988 | US4719359 Sensing probe for sludge detectors |
| 01/12/1988 | US4718575 Apparatus for ascertaining the level of flowable material in dust separators and the like |
| 01/12/1988 | US4718466 Circuit arrangement for the electro-thermal measurement of the filling level in the tank of a motor vehicle |
| 01/06/1988 | CN87207914U Liquid level display equipment |
| 01/06/1988 | CN87203138U Double colour buoy type fluviograph |
| 01/05/1988 | US4717671 Stabilized water indicating paste composition |
| 01/05/1988 | US4716762 Level sensor for use with an electrically insulating liquid |
| 01/05/1988 | US4716615 Wiper assembly |
| 12/30/1987 | WO1987007946A1 Optical sensor |
| 12/30/1987 | CN87203169U Digital fluid level display |
| 12/30/1987 | CN86102983A Float-frequency remote level meter |
| 12/29/1987 | US4716536 Measurement calibration |
| 12/29/1987 | US4716014 Moisture separator for steam generator level measurement system |
| 12/29/1987 | US4715966 Septic tank sludge level indicator |
| 12/29/1987 | US4715226 Ultrasonic apparatus for determining the amount of liquid in a container of known volume |
| 12/26/1987 | CN87208149U Hydraulic weighing type display for tanked liquefied petroleum gas |
| 12/23/1987 | DE3719555A1 Vorrichtung zur abtastung des brennstoffspiegels im tank eines kraftfahrzeugs A device for scanning-mirror of the fuel in the tank of a motor vehicle |
| 12/23/1987 | DE3619001A1 Water-level indicator for hydroponics receptacles |
| 12/23/1987 | CN86210272U 集成电极 Integrated electrodes |
| 12/23/1987 | CN86200524U Multi-functional magnetic oil-dipstick |
| 12/22/1987 | US4714176 Liquid supply reservoir |
| 12/22/1987 | CA1230481A1 Sampling and/or measuring apparatus for immersion in molten metal |
| 12/16/1987 | EP0249542A1 Tank liquid level measuring probe comprising a float governing a potentiometer |
| 12/16/1987 | EP0249521A1 Method and device for measuring the free surface of a liquid |
| 12/16/1987 | EP0248995A1 Level control apparatus |
| 12/16/1987 | EP0248870A1 Fluid volume measurement device |
| 12/16/1987 | EP0248850A1 Improvements made in gasoline marker |
| 12/15/1987 | US4713552 Optical probe |
| 12/15/1987 | US4713526 Reservoir filling arrangement for a coffee machine |
| 12/15/1987 | US4712505 Combination hazardous liquid and water sensor |
| 12/15/1987 | CA1230240A1 Fiber optic thermal anemometer |
| 12/10/1987 | DE3619296A1 Device for automatically refilling a liquid container |
| 12/09/1987 | EP0248504A1 System for measuring the filling height of material present in a tank and a sensor for use thereby |
| 12/08/1987 | US4711561 Toner recovery device |
| 12/08/1987 | US4711127 Method and apparatus for measuring the pressure of a fluid |
| 12/08/1987 | US4711126 Rechargeable battery |
| 12/08/1987 | US4711117 Side arm fluid level gauge with spaced-apart sensors for density error compensation |
| 12/05/1987 | CN86211046U Safty, energy-saving, electronic water level display and alarm used for an expansible water tank |
| 12/05/1987 | CN86210228U Automatic water level monitor |
| 12/05/1987 | CN86208989U Water level indicator of a solar energy water heater |
| 12/05/1987 | CN86207625U Liquid level display with low working position |
| 12/03/1987 | DE3718199A1 Vorrichtung zur abtastung des fluessigkeitspegels in einem tank Apparatus for scanning the fluessigkeitspegels in a tank |
| 12/03/1987 | DE3618397A1 Process and apparatus for electronic water level monitoring |
| 12/03/1987 | DE3617717A1 Fibre-optic level sensor |
| 12/02/1987 | EP0247909A1 Fibre-optical sensor |
| 12/02/1987 | EP0247908A1 Liquid level pick-up head using elastically guided waves |
| 12/02/1987 | CN87201239U Portable liquid-level gauge for ship |
| 12/02/1987 | CN87201138U Self-force type liquid-level gauge |
| 12/01/1987 | US4709653 Mechanical fluid indicator |
| 12/01/1987 | US4709585 Method and apparatus for monitoring environmental evapotranspiration |
| 11/26/1987 | DE3617234A1 Water or moisture indicator |
| 11/26/1987 | DE3617073A1 Moped and motorcycle tank lid with an integrated level indicator via a viewing window with a green marking ball operated by a plastic hose with a float |
| 11/25/1987 | CN87202247U Multifunction water level gauge |
| 11/24/1987 | US4708674 Separate lubricating system for marine propulsion device |
| 11/24/1987 | US4708191 Apparatus for indicating the level in metallurgical vessels by electromagnetic means |
| 11/24/1987 | CA1229501A1 Level gauge |
| 11/19/1987 | EP0246120A2 Electronic interface between a sensor and a display |
| 11/19/1987 | EP0245563A1 Optico-electronic level detector with double pick-up elements |
| 11/19/1987 | EP0245272A1 A device for detecting the presence or absence of liquid in a vessel |
| 11/18/1987 | CN87101632A Level sensor system |
| 11/17/1987 | US4706497 Liquid detection circuit |
| 11/11/1987 | EP0245159A1 Device for measuring the total liquid content of two containers |
| 11/11/1987 | EP0244559A1 Apparatus for monitoring the ink supply in ink writing machines |
| 11/11/1987 | CN86210878U Electronic charge level indicator |
| 11/11/1987 | CN86206336U Electronic fuel gauge |
| 11/11/1987 | CN86203710U Preheating oil dipstick |
| 11/10/1987 | US4706203 Capacitive gauging method and apparatus |
| 11/10/1987 | US4704983 For use in a plumbing fixture |
| 11/10/1987 | US4704902 Acoustical volume/pressure measurement device |
| 11/07/1987 | CN86206890U Double-reflection two-coloured fluviograph |