| Patents for G01L 13 - Devices or apparatus for measuring differences of two or more fluid pressure values (2,634) |
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| 01/04/1983 | US4366716 Pressure transducer |
| 12/28/1982 | US4365582 Differential pressure signal device |
| 12/21/1982 | US4364276 Differential pressure measuring transducer assembly |
| 12/15/1982 | EP0066583A1 Method for measuring the partial pressure of a gas and probe for implementing such method |
| 12/08/1982 | EP0066520A1 Device for measuring a pressure difference in a pulse column and its use in measuring the interface level and the density of the liquid medium |
| 12/01/1982 | EP0065845A1 High accuracy differential pressure capacitive transducer and method for making same |
| 11/25/1982 | WO1982004125A1 High accuracy differential pressure capacitive transducer and methods for making same |
| 11/09/1982 | US4357859 Pressure sensor |
| 10/19/1982 | US4354389 Vapor pressure sensor and flow measuring devices |
| 10/06/1982 | EP0061940A1 Differential pressure measuring system |
| 10/05/1982 | CA1132810A1 Liquid filled pressure transducer |
| 09/08/1982 | EP0059488A1 Capacitive pressure sensor |
| 09/07/1982 | US4347745 Pressure measuring apparatus |
| 09/07/1982 | US4347744 Diaphragm type differential pressure gauge with overpressure relief protection |
| 08/24/1982 | US4345476 Differential pressure transducer with high compliance, constant stress cantilever beam |
| 08/04/1982 | EP0057125A1 Transducer for a digital pressure measuring device |
| 08/03/1982 | US4342231 Differential pressure transmitter |
| 06/24/1982 | WO1982002093A1 Method for measuring the partial pressure of a gas and probe for implementing such method |
| 06/22/1982 | US4336567 Differential pressure transducer |
| 06/08/1982 | US4333350 Differential pressure sensing device |
| 06/01/1982 | US4332166 Temperature compensation apparatus for a liquid filled conduit |
| 05/18/1982 | US4329877 Adjustable overload mechanism for a differential pressure transmitter |
| 05/18/1982 | US4329775 Pressure measuring apparatus using vibratable wire |
| 04/20/1982 | CA1122028A1 Pressure sensitive indicating device |
| 04/15/1982 | WO1982001250A1 Capacitive pressure transducer with isolated sensing diaphragm |
| 04/06/1982 | US4322979 Optical device for measuring slight differences of pressure by means of a change in light intensity |
| 04/06/1982 | US4322978 Optical device for measuring slight pressure differences by means of light intensity changes |
| 04/01/1982 | WO1982001041A1 Electropneumatic converter |
| 03/23/1982 | US4321578 Pressure transducer |
| 01/19/1982 | US4311053 Vibrating beam pressure sensor |
| 01/12/1982 | US4309908 Liquid filled pressure transducer |
| 12/22/1981 | US4306460 Differential pressure transducer |
| 11/24/1981 | US4301685 Digital pressure-measuring device |
| 11/17/1981 | CA1112470A1 Capacitive pressure sensor |
| 10/13/1981 | CA1110464A1 Differential pressure to electric current transducer employing a strain sensitive resistive pattern on a substrate having a high modulus of elasticity |
| 09/08/1981 | CA1108433A1 Digital pressure-measuring device |
| 09/01/1981 | US4287501 Pressure sensor |
| 09/01/1981 | CA1107982A1 Pressure responsive apparatus |
| 08/25/1981 | US4285244 Non-symmetrical overload protection device for differential pressure transmitter |
| 07/14/1981 | US4277981 Lead screw actuated fluid gauge |
| 06/23/1981 | CA1103478A1 Method and apparatus for overrange protection of the transducer in a differential pressure transmitter |
| 05/12/1981 | US4266430 Precision pressure-responsive fluid gauge |
| 04/28/1981 | US4264889 Pressure transducer |
| 04/21/1981 | US4262540 Pressure measuring device |
| 03/25/1981 | EP0025566A2 Optical device for measuring small pressure differences by means of light intensity changes |
| 03/25/1981 | EP0025565A2 Optical device for measuring pressure differences by means of light intensity changes |
| 03/25/1981 | EP0025564A2 Optical device for measuring small pressure differences by means of light intensity changes |
| 03/24/1981 | US4257274 For automobiles; silicon, borosilicate glass |
| 03/24/1981 | CA1097990A1 Magnetic pressure indicator with thermal lockout |
| 03/10/1981 | US4254731 Filter restriction indicator |
| 02/24/1981 | CA1096195A1 Digital differential pressure measurement apparatus |
| 01/20/1981 | US4245497 Monitoring and remote-indicator apparatus for vacuum-generating internal combustion engines |
| 01/13/1981 | US4244226 Distance measuring apparatus and a differential pressure transmitter utilizing the same |
| 09/09/1980 | US4221134 Differential pressure transducer with strain gauge |
| 09/09/1980 | US4221133 Vibratory-wire pressure sensor |
| 09/02/1980 | CA1085018A1 Linear displacement transducer |
| 08/26/1980 | US4218925 Differential pressure transmitter with pressure sensor protection |
| 08/19/1980 | CA1083893A1 Differential fluid pressure indicating device |
| 07/22/1980 | CA1081989A1 Capacitive pressure sensor |
| 07/15/1980 | US4212209 Differential pressure to electric current transducer employing a strain sensitive resistive pattern on a substrate having a high modulus of elasticity |
| 06/26/1980 | WO1980001318A1 Pressure sensitive indicating device |
| 06/10/1980 | CA1079087A1 Pressure-balanced telemetric pressure sensing system and method therefore |
| 05/20/1980 | US4203327 Piezoresistive silicon strain sensors and pressure transducers incorporating them |
| 05/14/1980 | EP0010569A1 Magnetic pressure indicator with thermal lockout |
| 05/13/1980 | CA1077294A1 Pressure transmitter with simplified pressure sensing head |
| 05/06/1980 | CA1076832A1 Differential pressure transmitter with pressure sensor protection |
| 04/22/1980 | US4198867 Temperature compensating means for pressure measuring apparatus |
| 04/22/1980 | CA1075979A1 Magnetic pressure indicator with sampling ports |
| 04/08/1980 | US4196632 Dual capacitance type bonded pressure transducer |
| 02/19/1980 | US4189724 Electric restriction indicator with a contactless switch device for indicating a restriction in filter elements |
| 02/06/1980 | EP0007596A1 Capacitive pressure sensor |
| 01/22/1980 | US4184376 Pressure sensitive indicating device |
| 01/09/1980 | EP0006817A1 Numerically operating pressure sensor |
| 12/11/1979 | US4177680 Dual pressure sensor |
| 11/27/1979 | CA1067199A1 Transducer device for found waves with automatic compensation |
| 11/06/1979 | US4173149 Differential pressure sensing devices |
| 10/30/1979 | US4172971 Magnetic pressure indicator with thermal lockout |
| 10/30/1979 | US4172387 Pressure responsive apparatus |
| 10/09/1979 | CA1063824A1 Differential pressure gauge |
| 10/02/1979 | US4169389 Pressure measuring device |
| 09/11/1979 | CA1062093A1 Differential pressure indicating device |
| 08/28/1979 | US4165651 Pressure measuring apparatus using vibratable wire |
| 08/07/1979 | US4163395 Pressure transmitter with simplified pressure sensing head |
| 07/24/1979 | US4161887 Media independent differential pressure transducer |
| 07/10/1979 | CA1057971A1 Differential pressure cell with diaphragm tension and overpressure protection |
| 07/10/1979 | CA1057969A1 Differential pressure sensor |
| 06/19/1979 | US4158311 Pressure sensing device |
| 02/13/1979 | US4139466 Differential fluid pressure indicating device |
| 01/23/1979 | US4135408 Differential pressure measuring transducer assembly |
| 01/23/1979 | US4135407 Method and apparatus for overrange protection of the transducer in a differential pressure transmitter |
| 01/16/1979 | US4134293 Pressure differential indicating apparatus for a hydraulic measuring bridge and its associated measuring piston |
| 11/21/1978 | US4126801 Moveable seat for crystal in an oscillating crystal transducer systems |
| 10/24/1978 | CA1040883A1 Open-loop differential-pressure transmitter |
| 10/17/1978 | US4120206 Differential pressure sensor capsule with low acceleration sensitivity |
| 10/03/1978 | CA1039780A1 Differential pressure switch |
| 08/29/1978 | CA1037283A1 Differential pressure indicators |
| 08/08/1978 | US4104925 Pressure or pressure difference measuring apparatus |
| 08/08/1978 | US4104924 Pressure difference measuring apparatus |
| 07/18/1978 | US4101747 Differential pressure operated switch |
| 05/30/1978 | US4091682 Digital differential pressure measurement apparatus |