by measuring variation of frictional resistance of gases

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Patents Grantslast 30 patents

Information Patent Grant
Gas-friction vacuum indicator with a gas-friction sensor rotating a...
- Patent number 5,777,233
- Issue date Jul 7, 1998
- Forschungszentrum Julich GmbH
- Bernd Lindenau
- G01 - MEASURING TESTING
Information Patent Grant
Transporter for a rotor of a gas friction manometer
- Patent number 4,941,351
- Issue date Jul 17, 1990
- Physikalisch-Technische Bundesanstalt
- Wolfgang Jitschin
- G01 - MEASURING TESTING
Information Patent Grant
Method of and apparatus for gas pressure measurement by the gas-fri...
- Patent number 4,619,144
- Issue date Oct 28, 1986
- Kernforschungsanlage Julich
- Johan K. Fremery
- G01 - MEASURING TESTING
Information Patent Grant
2780099
- Patent number 2,780,099
- Issue date Feb 5, 1957
- G01 - MEASURING TESTING