| 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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| 03/11/1987 | CN85205439U High resolution metrical instrument for liquid position displaying |
| 03/10/1987 | US4649015 Monitoring system for a liquid-cooled nuclear fission reactor |
| 03/10/1987 | CA1218867A1 Method and apparatus for optical tank gauging |
| 03/03/1987 | US4647854 Apparatus for measuring the level of the molten metal in the mold of a continuous casting machine |
| 03/03/1987 | US4646796 Liquid level sensing apparatus |
| 03/03/1987 | US4646569 Fluid level measurement system |
| 03/03/1987 | US4646560 System and method for leak detection in liquid storage tanks |
| 02/26/1987 | WO1987001025A1 Monitor for liquid level and urine flow |
| 02/25/1987 | EP0211217A2 Remote level measurement method in a solid-liquid system |
| 02/25/1987 | EP0211142A2 Device for measuring displacement |
| 02/25/1987 | CN86201698U Glass liquidometer indicating water fulled with or lack of water for boiler |
| 02/24/1987 | US4646085 Shaft position encoder apparatus with logic and decoder |
| 02/24/1987 | US4644790 Liquid level indicator for humidifier |
| 02/24/1987 | US4644789 Liquid level indicator system |
| 02/24/1987 | US4644755 Emergency refrigerant containment and alarm system apparatus and method |
| 02/17/1987 | US4644177 Fluid level and condition detector system |
| 02/17/1987 | US4643025 System for measuring liquid level in a pressurized vessel |
| 02/10/1987 | US4641523 Liquid level gauge |
| 02/05/1987 | DE3526427A1 Plumbing device for measuring the height of silt or mud |
| 02/05/1987 | DE3526266A1 Optical level sensor |
| 02/05/1987 | DE3515701A1 Filling level meter |
| 02/04/1987 | EP0210509A1 Method for measuring the properties of a fluid, and sensor element for carrying out this method |
| 02/03/1987 | US4641139 Method and apparatus for measuring the level of a fluent material in a container |
| 02/03/1987 | US4641122 Device for measuring the level or volume of liquid in a tank |
| 02/03/1987 | US4641083 Method and apparatus for supervising charges in blast furnace using electromagnetic waves |
| 02/03/1987 | US4641025 System for determining the position of the boundary between substances having different refractive indices |
| 02/03/1987 | US4640127 Electrothermal measurement of levels compensated for ambient temperature |
| 02/03/1987 | US4640126 Device for measuring oil level in an internal combustion engine |
| 01/29/1987 | WO1987000410A1 Portable gas grill |
| 01/29/1987 | DE3525455A1 Control device for fermenting temperature |
| 01/28/1987 | EP0209872A2 Method and apparatus for ultrasonic interface detection |
| 01/27/1987 | US4639594 Fiberoptic probe and method of making and using |
| 01/27/1987 | US4639349 Non-invasive liquid level and density gauge for nuclear power reactor pressure vessels |
| 01/27/1987 | US4638667 Remote probe positioning apparatus |
| 01/27/1987 | US4638663 Level indicating device for liquid containers |
| 01/27/1987 | US4638662 Tank leakage detector |
| 01/21/1987 | EP0209458A1 Dielectric fluid liquid level pick-up device |
| 01/20/1987 | US4638305 Apparatus for detecting water in fuel |
| 01/20/1987 | US4638291 Sensor assembly for a radiator mounted coolant level monitoring system |
| 01/20/1987 | US4638288 Thermal level detector for conductive or nonconductive liquids or gases |
| 01/20/1987 | US4637463 Echo ranging gun |
| 01/20/1987 | US4637424 Probeless fluid level controller |
| 01/20/1987 | US4637254 Gauge apparatus for measuring liquid levels |
| 01/14/1987 | EP0208377A1 Device for controlling the filling level of an ink cartridge |
| 01/14/1987 | CN86203386U 水位控制器 Water Level Controller |
| 01/13/1987 | US4635480 Density compensating float |
| 01/13/1987 | US4635478 Device for registration of level, transition zones and temperature |
| 01/08/1987 | DE3522616A1 Device for monitoring the water level in the sewage system of a building |
| 01/07/1987 | EP0207238A1 Device for electrical oil level control, especially in internal-combustion engines of motor vehicles |
| 01/07/1987 | EP0207128A1 Oil level sensor system and method for oil wells |
| 01/07/1987 | CN86202977U Reflective-transmissive two-coloured level meter |
| 01/07/1987 | CN86202677U Reflective-transmissive two-coloured level meter |
| 01/07/1987 | CN86202638U Inside channel type peeping device |
| 01/06/1987 | US4635043 Level indication |
| 01/06/1987 | US4633711 Local display technique for fiber optic illuminator/hood system |
| 01/06/1987 | CA1216342A1 Cup filling apparatus |
| 12/30/1986 | US4633491 Circuit for electrothermal level measurement compensated for ambient temperature |
| 12/30/1986 | EP0206845A1 Device for indicating the quantity of liquid in a container, and container provided with such a device |
| 12/30/1986 | EP0205798A1 Device for electrical oil level control, especially in internal-combustion engines of motor vehicles |
| 12/30/1986 | EP0205531A1 Fibre optic sensor |
| 12/23/1986 | US4631529 Electro-optical fluid detector |
| 12/23/1986 | US4631374 Diaphragm operated switch type bin level sensor |
| 12/23/1986 | US4630478 Liquid volume sensor system |
| 12/23/1986 | US4630477 Thermistor liquid-level sensing probe |
| 12/23/1986 | US4630476 Liquid level gauge |
| 12/23/1986 | US4630475 Fiber optic level sensor for humidifier |
| 12/23/1986 | US4630467 Leak detector |
| 12/23/1986 | CA1215555A1 Device for registration of level, transition zones and temperature |
| 12/18/1986 | WO1986007446A1 Optical liquid detector |
| 12/17/1986 | EP0205229A1 Liquid depth measurement system |
| 12/17/1986 | CN85205302U Reflective coloured liquid level indicator made of glass plate |
| 12/16/1986 | US4630245 Non-contacting liquid level detection system |
| 12/16/1986 | US4628960 Sprayer sight gauge |
| 12/16/1986 | US4628951 Liquid level detection system for high temperature or pressure environments |
| 12/10/1986 | EP0204331A2 Device for electrically monitoring the oil level, especially in motor vehicle combustion engines |
| 12/10/1986 | EP0203941A1 Water detector for fuel systems and method for detecting water in same |
| 12/10/1986 | CN85104783A Liquid level meter for yellow phosphorus |
| 12/09/1986 | US4628302 Liquid level detection system |
| 12/09/1986 | US4627283 Fuel level detector for automobile fuel tank |
| 12/09/1986 | US4627282 Fluid level sensor |
| 12/09/1986 | US4627281 Tank gaging system |
| 12/09/1986 | US4627280 Inductance liquid level meter |
| 12/09/1986 | CA1215157A1 Fluid detection system |
| 12/03/1986 | EP0203364A2 Fluid-bearing of a piston of a pressure-measuring device |
| 12/03/1986 | EP0203341A1 Device for measuring and controlling the filling level of a liquid container |
| 12/02/1986 | US4626700 Hydraulic reservoir with fluid level detector |
| 12/02/1986 | US4625553 System to determine the level and weight of liquid in a tank or the like |
| 12/02/1986 | US4625549 Optical fluid level indicator including float with reflecting means |
| 12/02/1986 | US4625548 Hydrostatic head pressure sensors for a system to determine fluid level and weight |
| 12/02/1986 | CA1214858A1 Acoustic ranging system |
| 11/25/1986 | US4625284 Fuel gauge for vehicles |
| 11/25/1986 | US4624139 Capacitance-type material level indicator |
| 11/25/1986 | US4624055 Consecutive reading gauging bob |
| 11/18/1986 | US4623264 Temperature sensing using ultrasonic system and movable target |
| 11/18/1986 | US4622935 Low level lubricating oil detector |
| 11/18/1986 | CA1214240A1 Method of measuring and controlling the level of liquid in a container |
| 11/12/1986 | EP0200969A1 Bottle filling device |
| 11/12/1986 | CN86201253U Water level-checking and measuring device for hot sleeve pressure container-type boiler |
| 11/12/1986 | CN85103941A Audio instrument for measuring material level |
| 11/12/1986 | CN85103398A Syrup sensor for dispensing machine |