| 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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| 11/07/1987 | CN86206017U Reflecting and transmitting two-coloured fluviograph |
| 11/05/1987 | DE3614652A1 Drinking vessel with acoustic level indicator |
| 11/04/1987 | EP0244033A2 Methods and apparatus for time domain reflectometry determination of relative proportion, fluid inventory and turbulence |
| 11/04/1987 | CN87202626U Colored fluid level gauge with triple prism mirror |
| 11/04/1987 | CN87200647U Colour fluid level gauge with single mirror |
| 11/03/1987 | US4703652 Piezoelectric type liquid level sensor and fabricating method thereof |
| 10/29/1987 | DE3722667A1 Gas withdrawal valve for liquid-gas containers |
| 10/29/1987 | DE3614130A1 Fluid level sensor |
| 10/29/1987 | DE3613906A1 Device for monitoring the content of expansion vessels and the like loaded with gas pressure |
| 10/27/1987 | US4703314 Fluid level detector |
| 10/27/1987 | US4702107 Device for detecting the level of a liquid contained in a tank |
| 10/27/1987 | US4702009 Device for measuring the level of a material stored in a tank |
| 10/27/1987 | CA1228658A1 Method and apparatus for measuring the distance to an object |
| 10/20/1987 | US4700754 Arrangement for controlling the level of an ink container |
| 10/20/1987 | US4700569 Method and arrangement for signal transmission in ultrasonic echo sounding systems |
| 10/20/1987 | CA1228408A1 Housing for float switch mechanism |
| 10/15/1987 | DE3711241A1 Eiskastenniveausensor Eiskastenniveausensor |
| 10/14/1987 | EP0240598A1 Level measuring system |
| 10/13/1987 | US4700170 For use in a liquid level indicating system |
| 10/13/1987 | US4699885 Paste including indicator dye |
| 10/13/1987 | US4699003 Fuel meter for vehicles |
| 10/07/1987 | EP0240062A2 Dipstick |
| 10/07/1987 | CN87101629A Bin level intelligent measure and control system |
| 10/06/1987 | US4697453 Apparatus for monitoring burden distribution in furnace |
| 10/03/1987 | CN86205729U Electronic fuel measuring and display device |
| 09/30/1987 | EP0239448A1 Liquid fuel draining and gauging device for a motor vehicle tank |
| 09/30/1987 | EP0239253A2 Empty container detector with drop sensor |
| 09/30/1987 | CN86210198U Bridge type large tank liquid-level gauge |
| 09/30/1987 | CN86207754U Liquid level transducer of the condenser liquid-level gauge |
| 09/30/1987 | CN86206999U Microcomputerized open canal flow meter |
| 09/29/1987 | US4696261 Coolant level sensor arrangement in boiling liquid cooling system |
| 09/24/1987 | WO1987005698A1 Quantity indicating product-dispensing apparatus and method |
| 09/23/1987 | EP0238381A1 Vibration absorber and car engine fuel level-measuring device with such a vibration absorber |
| 09/23/1987 | EP0237850A1 Fibre-optical sensor for liquid-level indicators or regulators |
| 09/22/1987 | US4695796 Magneto-optic measuring device |
| 09/22/1987 | US4695789 Probe devices |
| 09/22/1987 | CA1227058A1 Mesuring instrument |
| 09/16/1987 | EP0236937A1 Device for controlling the ink in ink-writing devices |
| 09/16/1987 | CN86209350U Electric contact for monitoring water level |
| 09/16/1987 | CN86206853U Pneumatic vacuum type level sensor |
| 09/16/1987 | CN86205735U Light-gathering type glass plate for bicolour hydrological gauge |
| 09/16/1987 | CN86104134A Self-chosing indicator for fluid level |
| 09/15/1987 | US4694161 Fluid flow and level detector |
| 09/15/1987 | US4694128 Float switch construction for monitoring liquid levels |
| 09/15/1987 | US4693117 Replacement element for at liquid level gauge sight tube |
| 09/12/1987 | CN86206573U Self-closing type fluid level indicator |
| 09/12/1987 | CN86206567U Transmission-refraction type two-colour fluid level gauge |
| 09/09/1987 | EP0236203A1 Method for positioning a sensor for detecting the location of an interface between two fluids and device for carrying out the method |
| 09/09/1987 | EP0236117A1 Liquid level indicating apparatus |
| 09/09/1987 | EP0156849B1 Measurement scale for measuring the head of gravitational flow lines |
| 09/09/1987 | CN86207087U Dichromatic fluviograph with a distinct interface |
| 09/08/1987 | US4692023 Optical adapter for a light-wave rangefinder |
| 09/08/1987 | US4691793 Apparatus for detecting amount of liquid nitrogen |
| 09/08/1987 | US4691519 Master cylinder |
| 09/08/1987 | CA1226513A1 Blanket-medium/brine interface detection in a solution-mining process |
| 09/02/1987 | EP0234534A2 Level sensor system |
| 09/02/1987 | EP0234479A2 Radar tank gauge |
| 09/02/1987 | EP0234154A1 Vehicle facia instrument |
| 09/02/1987 | CN86202230U Two-way illumination transmission and reflection type dichromatic liquidometer |
| 09/02/1987 | CN86101109A Photoelectric liquid leveller |
| 09/01/1987 | US4691113 Level indicator for a liquid in a container |
| 09/01/1987 | US4689991 Fluid-gauging probes and their manufacture |
| 09/01/1987 | CA1226250A1 Indicating liquid funnel |
| 08/27/1987 | DE3605403A1 Optoelectronic level sensor |
| 08/26/1987 | CN86208979U Prism transmission type colour-liquidometer |
| 08/26/1987 | CN86205237U Build-in prism type colour-liquidometer |
| 08/25/1987 | US4689489 Method of determining the level of a material in a tank |
| 08/25/1987 | US4689304 Air/liquid detection device for blood sample analysis |
| 08/25/1987 | US4688587 Liquid tank and process for operating it |
| 08/19/1987 | EP0232272A1 Liquid level monitoring assemblies |
| 08/19/1987 | EP0232263A1 Monitor for liquid level and urine flow |
| 08/18/1987 | US4688028 Audible low-fuel alarm for propane fuel tank |
| 08/18/1987 | US4688027 Isolated molded sensor strip |
| 08/18/1987 | CA1225619A1 Pouring spout |
| 08/13/1987 | DE3604230A1 Fibre-optic level sensor |
| 08/13/1987 | DE3604027A1 Apparatus for sensing filled material |
| 08/12/1987 | CN86206680U Double-tube buoy level gage in boiler |
| 08/12/1987 | CN86206620U Joint structure connecting valve body and gauge |
| 08/12/1987 | CN86202222U Penetrating and reflexing two-colour levelmeter |
| 08/12/1987 | CN86100035A Process for preparing co-60 rod like radioactive resource with foil material containing co |
| 08/11/1987 | US4685332 Liquid level sensing device |
| 08/06/1987 | DE3603539A1 Device for detecting a liquid level |
| 08/05/1987 | CN86206809U Magnetic liquid-level sensor with sliding rheostat |
| 08/04/1987 | US4683851 Engine oil level indicator |
| 08/04/1987 | US4683752 For determining a property of a liquid |
| 07/29/1987 | EP0229960A2 Liquid level sensor |
| 07/29/1987 | CN87100483A Device for measuring accumulator electrolyte parameters |
| 07/28/1987 | US4682874 Particle level indicator |
| 07/28/1987 | CA1224868A1 Tank gauging system and methods |
| 07/22/1987 | EP0229225A2 Device for measuring the level in a container |
| 07/21/1987 | US4682157 Polar fluid detection system unaffected by power line voltages |
| 07/21/1987 | US4682043 Obtaining uniformity of response in analytical measurement in a neutron-capture-based on-line bulk-substance elemental-analyzer apparatus |
| 07/15/1987 | EP0228972A2 Device and method for controlling the level of powder in a container |
| 07/15/1987 | EP0228823A1 Audible low-fuel alarm for propane fuel tank |
| 07/15/1987 | EP0228510A2 Device for detecting a level, especially of a fluid in a container |
| 07/15/1987 | CN86200852U Volumetric fuel-consumption meter for ship |
| 07/14/1987 | US4680575 Liquid level detecting device |
| 07/14/1987 | US4680475 Apparatus for detecting an interface in fluids utilizing plural multiplexed light emitters and receivers |
| 07/14/1987 | US4679433 Fluid-gauging systems |
| 07/14/1987 | US4679432 Probe for measuring the level of a liquid |