| Patents for G01L 11 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group or (2,548) |
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| 03/05/1981 | WO1981000618A1 Fiber optic strain sensor |
| 02/24/1981 | US4252015 Wellbore pressure testing method and apparatus |
| 02/17/1981 | CA1096008A1 Furnace pressure sensor |
| 01/13/1981 | US4244226 Distance measuring apparatus and a differential pressure transmitter utilizing the same |
| 01/07/1981 | EP0021199A2 Optical sensing system |
| 12/09/1980 | CA1091059A1 Apparatus for measuring barometric pressure |
| 12/02/1980 | US4236401 Frequency response tester |
| 10/29/1980 | EP0018207A1 Pressure monitoring system for electrofluidic sensing devices |
| 09/02/1980 | CA1085018A1 Linear displacement transducer |
| 08/19/1980 | US4217774 Apparatus for measuring the value of a fluid variable |
| 08/05/1980 | US4215646 Low pressure differential detecting whistle |
| 07/29/1980 | US4214487 Apparatus for measuring the pressure in a very small volume |
| 04/15/1980 | US4197743 Apparatus for measuring barometric pressure |
| 01/23/1980 | EP0007312A1 Optical sensing apparatus. |
| 01/22/1980 | US4185239 Super sharp and stable, extremely low power and minimal size optical null detector |
| 01/09/1980 | EP0006817A1 Numerically operating pressure sensor |
| 11/06/1979 | US4173412 Strain measurement |
| 10/02/1979 | US4169386 Agricultural water pressure gauge |
| 06/28/1979 | WO1979000377A1 Optical sensing apparatus and method |
| 06/26/1979 | CA1057424A1 Non-invasive nuclear device for communicating pressure inside a body to the exterior thereof |
| 05/15/1979 | US4154115 Method and device for continuous measuring of gas pressures |
| 04/03/1979 | US4147431 Apparatus and method for measuring pressures and indicating leaks with optical analysis |
| 03/21/1979 | EP0001188A1 Pressure transmitting device and a control or regulating system using it |
| 01/16/1979 | US4134304 Air pressure transducer of diffusion type |
| 10/03/1978 | US4117734 Apparatus for indicating true furnace draft |
| 10/03/1978 | US4117718 Internal pressure and vacuum monitoring apparatus |
| 05/23/1978 | US4090406 Sensor |
| 03/21/1978 | US4080151 Furnace pressure sensor |
| 03/07/1978 | US4077262 Slaved pressure transducer |
| 01/31/1978 | US4071753 Transducer for converting acoustic energy directly into optical energy |
| 07/05/1977 | US4033182 Method for measuring biaxial stress in a body subjected to stress inducing loads |
| 05/10/1977 | US4022190 Apparatus for sensing pressure |
| 04/19/1977 | US4018088 Borehole pressure measurement apparatus having a high pressure float valve |
| 04/05/1977 | US4015477 Linear displacement transducer |
| 03/08/1977 | US4010642 Borehole pressure measurement |
| 03/01/1977 | US4009616 Acoustic method for measuring gas pressure |
| 02/08/1977 | US4006735 Pressure sensor apparatus |
| 01/11/1977 | US4002934 Sensitive element of piezooptic measuring converter |
| 10/12/1976 | US3985027 Controlled flow impedance in a pressure sensing system |
| 09/07/1976 | US3978731 Surface acoustic wave transducer |
| 08/31/1976 | US3977252 Method and apparatus for controlling liquid pressure in pipelines |
| 08/31/1976 | US3977250 Encoding altimeter |
| 06/01/1976 | US3960033 Flowmeter and function generator therefor |
| 05/04/1976 | US3955164 Electromagnetic force applying device |
| 04/20/1976 | US3950997 Precision pneumatic null balance pressure transducer |
| 04/20/1976 | US3950987 Piezo-optic measuring transducer and accelerometer, pressure gauge, dynamometer, and thermometer based thereon |
| 03/09/1976 | US3942381 Ultrasonic pressure test method and apparatus |
| 02/24/1976 | US3939712 Pneumatic differential pressure sensor |