| 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) |
|---|
| 02/26/1980 | CA1072655A1 Resistive fluid detecting means |
| 02/20/1980 | EP0008095A1 Developer station for a two-component diazotype material |
| 02/19/1980 | US4188826 Device for measuring the liquid level of an electrically conductive liquid |
| 02/19/1980 | US4188726 Level-determining device |
| 02/12/1980 | US4187723 Liquid nitrogen level indicator |
| 02/12/1980 | CA1071562A1 Method of determining liquid level of charge stock in thermal cracking unit |
| 02/05/1980 | US4187503 Sump alarm device |
| 02/05/1980 | US4187262 Carbonator and liquid level control |
| 02/05/1980 | US4187025 Device for producing a light signal corresponding to the refractive index of a fluid |
| 02/05/1980 | US4186792 Apparatus for monitoring and controlling the level of the molten metal in the mold of a continuous casting machine |
| 02/05/1980 | US4186604 Electronic dipstick |
| 02/05/1980 | CA1071322A1 Ultrasonic transducer and a method for manufacture thereof |
| 01/29/1980 | US4186419 Apparatus for monitoring and controlling liquid level |
| 01/29/1980 | US4186341 Magnetic developing agent level detection apparatus using an oscillator whose frequency is controlled by the level |
| 01/29/1980 | CA1070817A1 Apparatus for measuring water depth |
| 01/29/1980 | CA1070794A1 Safe start checking liquid processing system |
| 01/29/1980 | CA1070512A1 Float controlled volumetric gauge |
| 01/29/1980 | CA1070511A1 Liquid level sensor |
| 01/23/1980 | EP0007155A1 Monitoring apparatus |
| 01/23/1980 | EP0007072A1 Level indicator, more particularly for measuring the tank contents of motor vehicles |
| 01/22/1980 | US4185207 Amplifier system with alternate inputs |
| 01/22/1980 | US4184370 Liquid level measuring device |
| 01/22/1980 | US4184369 Device for the continuous measurement of the liquid level in a container |
| 01/22/1980 | CA1070409A1 Inductive liquid level sensing |
| 01/15/1980 | US4184011 Float-type liquid level indicator |
| 01/15/1980 | US4183246 Insulation presence sensing probe |
| 01/15/1980 | US4183244 Ultrasonic flow rate measuring apparatus |
| 01/15/1980 | US4183142 Self-retracting measuring device with wiping system for oil sumps and other containers |
| 01/15/1980 | CA1070008A1 Method of and apparatus for monitoring slag depth in refining crucible |
| 01/15/1980 | CA1069996A1 Apparatus for generating an electrical signal indicative of liquid level |
| 01/09/1980 | EP0006732A1 Dipstick |
| 01/09/1980 | EP0006317A1 Liquid level detector |
| 01/09/1980 | EP0006221A1 Apparatus for the determination of the quantity of particles in a container |
| 01/08/1980 | US4183007 Ultrasonic transceiver |
| 01/08/1980 | US4182935 Optical fiber data transmission system |
| 01/08/1980 | US4182451 Container level height detector |
| 01/08/1980 | US4182363 Liquid level controller |
| 01/08/1980 | US4182179 Sight glass assembly |
| 01/08/1980 | US4182178 Method and apparatus for measuring a change in surface level of a liquid |
| 01/08/1980 | US4182177 Sound emission level detection |
| 01/08/1980 | US4182176 Liquid level sensor with improved linearity |
| 01/08/1980 | US4182157 Soil percolation testing apparatus |
| 01/01/1980 | US4181021 Position transmitter |
| 12/18/1979 | US4179623 Pulsed level sensor |
| 12/18/1979 | US4178802 Apparatus for indicating quantity of fuel of a vehicle |
| 12/18/1979 | CA1068373A1 Fluid level indicator |
| 12/18/1979 | CA1068109A1 Furnace charge profile measuring process and apparatus |
| 12/11/1979 | US4178623 Measuring sensor for capacitive measurement of liquids at selected levels |
| 12/11/1979 | US4178575 Indicating apparatus for indicating numerals or letters by a plurality number of indicating elements |
| 12/11/1979 | CA1067992A1 Method and apparatus for ultrasonic material level control |
| 12/11/1979 | CA1067982A1 Solids level indicator |
| 12/11/1979 | CA1067981A1 Liquid level gauge |
| 12/04/1979 | US4176553 Liquid level measuring system |
| 12/04/1979 | US4176550 Depth/flow monitoring instrumentation |
| 12/04/1979 | US4176457 Combined dipstick breather tube |
| 11/27/1979 | US4176349 Intravenous alarm system |
| 11/27/1979 | US4175435 Liquid level detecting device |
| 11/27/1979 | CA1067212A1 Interface detection by neutron scattering |
| 11/27/1979 | CA1067209A1 Analog to digital encoder unit employing a pre-encoded film |
| 11/27/1979 | CA1066910A1 Temperature measure method and sensor |
| 11/20/1979 | US4174574 Engine oil level measurement device for sound proof encapsulated internal combustion engines |
| 11/13/1979 | US4173893 Fluid quantity indicator |
| 11/13/1979 | US4173892 Apparatus for measurement of quantity of liquid in container |
| 11/06/1979 | CA1065976A1 Alternating current liquid level indicator |
| 10/30/1979 | CA1065442A1 Method and apparatus for indicating levels in receptacles |
| 10/23/1979 | US4171932 Liquid level sensor, pump system means and circuit means |
| 10/16/1979 | US4171520 Transponder system including an oscillator/ripple counter controlling a fixed gray code logic network in circuit with a driver/gate circuit for generating "red-alert" end condition digital signals in a storage tank gauging system |
| 10/16/1979 | US4171186 Submerged pump control |
| 10/16/1979 | CA1064595A1 Means for sensing change in the amount of fluent material in a reservoir |
| 10/09/1979 | US4170754 Phase encoded digital position probe assembly |
| 10/09/1979 | US4170311 Level measuring system |
| 10/09/1979 | US4170136 Level indicator for frozen confection dispenser |
| 10/09/1979 | US4170135 Coaxial cavity for measuring level of liquid in a container |
| 10/02/1979 | US4169543 Amplitude responsive detector |
| 10/02/1979 | US4169377 Quantity sensing system for a container |
| 10/02/1979 | CA1063380A1 Measuring device for water flow in a buried pipe |
| 09/25/1979 | US4168613 Oil reservoir device with oil level detector means for a tandem type master cylinder |
| 09/18/1979 | US4167874 Liquid volume measuring device |
| 09/04/1979 | US4166609 Device for detecting surface level of scum in scum removing apparatus |
| 09/04/1979 | US4166388 RF Admittance measuring method and apparatus for determining the level of a conductive liquid |
| 09/04/1979 | CA1061592A1 Fluid interface measuring device for use in earth boreholes |
| 08/28/1979 | US4165935 Differential float control |
| 08/28/1979 | US4165641 Liquid level sensing means |
| 08/28/1979 | CA1061435A1 Optical-electrical liquid probe |
| 08/28/1979 | CA1061301A1 Liquid level measuring apparatus |
| 08/22/1979 | EP0003566A1 Level indicator |
| 08/21/1979 | US4165509 Dual liquid level monitor |
| 08/21/1979 | CA1060981A1 Fail-safe circuit |
| 08/14/1979 | US4164197 Liquid level indicating device |
| 08/14/1979 | US4164146 Apparatus and method for monitoring the presence of a conductive media |
| 08/14/1979 | US4164145 Self-powered electrical meter for display of a liquid-level or the like measurement |
| 08/14/1979 | US4164054 Dipstick wiper |
| 08/14/1979 | CA1060484A1 Portable weigh apparatus for measuring liquid volume |
| 08/07/1979 | US4163917 Ultrasonic transducer with temperature stability due to selected damping materials and/or assembly methods |
| 08/07/1979 | US4163391 Device for checking the level of a liquid in a tank |
| 07/25/1979 | EP0003170A1 Apparatus for measuring fuel consumption of a liquid-fuel burning engine |
| 07/24/1979 | US4162491 Inductive position sensor with minimum output signal level capacitively coupled to indicate failure of device |
| 07/24/1979 | US4162473 Drilling mud level measurement |
| 07/24/1979 | CA1058979A1 Remote-reading oil level gauge |
| 07/17/1979 | US4161188 Jet type liquid level sensor and system |