| Patents for G01L 9 - Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by electric or magnetic pressure-sensitive elements; Transmitting or indicating the displacement of mechanical pressure-sensitive elements, used to measure the steady or quasi-steady pressure of a fluid or fluent solid material, by electric or magnetic means (16,396) |
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| 10/17/1978 | CA1040455A1 Piezoelectric liquid level sensor |
| 10/03/1978 | US4117724 Ambient pressure sensor |
| 10/03/1978 | CA1039529A1 Pressure sensors utilizing ferromagnetic fluids |
| 09/26/1978 | US4117504 Heterogeneous semiconductor structure with composition gradient and method for producing same |
| 09/26/1978 | US4116075 Mechanical to electrical transducer |
| 09/26/1978 | US4115877 Liquid level sensing device and swimming pool water circulation systems containing the same |
| 09/19/1978 | USRE29765 Strain gauge transducer system |
| 09/19/1978 | CA1038644A1 Capacitive load cell |
| 09/12/1978 | US4112960 Variable-gradient spring sub-assembly |
| 09/12/1978 | US4112879 Process for the regulation of the optimum operational behavior of an internal combustion engine |
| 09/12/1978 | US4112777 Air pressure monitor |
| 08/29/1978 | US4109518 Engine monitoring apparatus |
| 08/29/1978 | CA1037575A1 Pressure responsive variable capacitor |
| 08/22/1978 | US4109147 Optical position sensor |
| 08/22/1978 | CA1036832A1 Pressure sensitive capacitance sensing element |
| 08/15/1978 | US4106350 Thin wire pressure sensor |
| 08/15/1978 | US4106349 Transducer structures for high pressure application |
| 08/15/1978 | US4106343 Solid state barometric altimeter-encoder |
| 08/15/1978 | US4106342 Pressure measuring apparatus |
| 08/01/1978 | US4104595 Signal translating circuit for variable area capacitive pressure transducer |
| 08/01/1978 | US4103555 Pressure sensor for high-temperature liquids |
| 07/25/1978 | US4103273 Method for batch fabricating semiconductor devices |
| 07/25/1978 | US4102210 Pressure transducers |
| 07/25/1978 | US4102209 Temperature compensated vibrating cylinder pressure transducer |
| 07/18/1978 | US4100811 Differential surface acoustic wave transducer |
| 07/04/1978 | US4099164 Sensors for sensing a plurality of parameters |
| 07/04/1978 | US4098133 Vibrating diaphragm fluid pressure sensor device |
| 06/27/1978 | US4096758 Pressure to electric transducer |
| 06/06/1978 | US4093933 Sculptured pressure diaphragm |
| 06/06/1978 | US4092856 Kilobar range stress gauge |
| 05/30/1978 | US4092696 Variable area capacitive pressure transducer with temperature compensation |
| 05/30/1978 | US4091683 Single channel electrical comparative measuring system |
| 05/30/1978 | US4091682 Digital differential pressure measurement apparatus |
| 05/23/1978 | US4090513 Heat and moisture exchanging device for respiration |
| 05/09/1978 | US4089036 Capacitive load cell |
| 05/09/1978 | US4088916 Piezoelectric pressure pickup |
| 05/09/1978 | US4088904 Capacitive transistorized signaling device |
| 05/02/1978 | US4086815 Device for use in sensing pressures |
| 05/02/1978 | US4086814 Pressure sensing system |
| 04/25/1978 | US4086557 Variable resistance pressure transducer |
| 04/25/1978 | US4085620 Pressure-electric transducers |
| 04/18/1978 | US4084439 Pressure transducer with capacitor pick-up means |
| 04/18/1978 | US4084438 Capacitive pressure sensing device |
| 04/04/1978 | US4082001 Non-destructive method for applying and removing instrumentation on helicopter rotor blades |
| 03/28/1978 | US4081636 Differential pressure cutout switch |
| 03/28/1978 | US4080830 Pressure transducer |
| 03/21/1978 | US4079508 Miniature absolute pressure transducer assembly and method |
| 03/14/1978 | US4079351 Pressure responsive sender |
| 03/14/1978 | US4078432 Fibre optic pressure sensor |
| 03/07/1978 | US4078232 Optical analog to digital converter |
| 03/07/1978 | US4077262 Slaved pressure transducer |
| 02/21/1978 | US4075525 Piezoelectric accelerometer transducer |
| 02/21/1978 | US4074576 Fluid pressure measuring device |
| 02/14/1978 | US4073191 Differential pressure transducer |
| 02/07/1978 | US4072058 Differential pressure transmitter with pressure sensor protection |
| 02/07/1978 | US4072057 Differential pressure cell with diaphragm tension and overpressure protection |
| 02/07/1978 | US4072047 Method and apparatus for monitoring intake manifold vacuum |
| 01/31/1978 | US4071753 Transducer for converting acoustic energy directly into optical energy |
| 01/24/1978 | US4069714 Method for measuring physical data by magnetic means |
| 01/17/1978 | US4068527 Transducer |
| 01/10/1978 | US4068206 Pressure-sensing semiconductor transducer |
| 01/10/1978 | US4067241 Improvements in or relating to oscillating crystal transducer systems |
| 01/03/1978 | US4065971 Semiconductor pressure transducer |
| 01/03/1978 | US4065970 Diffused semiconductor pressure gauge |
| 01/03/1978 | US4065969 Low impedance, high current pressure transducer |
| 12/27/1977 | US4064758 Pressure transducer structure |
| 12/20/1977 | US4064550 High fidelity pressure transducer |
| 12/20/1977 | US4064549 Cylindrical capacitive quartz transducer |
| 12/20/1977 | US4064497 Sensors for sensing a plurality of parameters |
| 12/20/1977 | US4064476 Air pressure transducer |
| 12/13/1977 | US4063209 Integral transducer assemblies employing built-in pressure limiting |
| 12/13/1977 | US4062354 Intracranial pressure transducer system |
| 12/06/1977 | US4061035 Diaphragm arrangement for pressure transducers |
| 12/06/1977 | US4061034 Fluid pressure sensing device |
| 11/29/1977 | US4059999 Pressure transducers for plastic substances |
| 11/22/1977 | US4059087 Oil pressure detecting apparatus for internal combustion engines |
| 11/15/1977 | US4058788 Differential pressure transducer |
| 11/08/1977 | US4056980 Depression sensor for an electronic ignition advance device for an internal combustion engine |
| 11/01/1977 | US4056009 Diaphragm arrangement for pressure transducers |
| 11/01/1977 | US4056008 Transducing methods and transducers |
| 10/18/1977 | US4054497 Method for electrolytically etching semiconductor material |
| 10/11/1977 | USRE29436 Encoder for altimeters and the like instruments |
| 10/04/1977 | US4052628 Dynamic, shear-mode piezoelectric pressure sensor |
| 09/27/1977 | US4051451 Beam type transducers employing dual direction force limiting means |
| 09/27/1977 | US4050313 Semiconductor pressure transducer |
| 09/20/1977 | US4048846 Pressure responsive apparatus |
| 09/06/1977 | US4047001 Encoding altimeter |
| 09/06/1977 | US4046010 Pressure transducer with welded tantalum diaphragm |
| 08/30/1977 | US4045787 Sensors for sensing a plurality of parameters |
| 08/30/1977 | US4045687 Circuit arrangement for evaluating the electrical output signals of a detector for thickness changes in a fuel injection line |
| 08/23/1977 | US4043201 Fluid pressure transducer |
| 08/23/1977 | US4043197 Flow rate transducer |
| 08/09/1977 | US4040297 Pressure transducer |
| 08/09/1977 | US4040172 Method of manufacturing integral transducer assemblies employing built-in pressure limiting |
| 08/02/1977 | US4040118 Pressure sensitive transducer |
| 08/02/1977 | US4039375 Detection of fuel rod leakage |
| 08/02/1977 | US4038868 Transducer for measuring injection pressures of diesel engines |
| 07/26/1977 | US4038532 Electronic digital gauge |
| 07/19/1977 | US4036050 Engine monitoring apparatus |
| 07/12/1977 | US4035823 Stress sensor apparatus |