Jean G. Appel

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Le Plessis Robinson, FR

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Patents Grantslast 30 patents

Information Patent Grant
Ultrasonic flow rate meter
- Patent number 4,334,434
- Issue date Jun 15, 1982
- Office National d'Etudes et de Recherches Aerospatiales O.N.E.R.A.
- Jean G. Appel
- G01 - MEASURING TESTING