Roland Lett

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Patents Grantslast 30 patents

Information Patent Grant
Tranquillizer device for requlating the flow profile of fluid
- Patent number 4,821,768
- Issue date Apr 18, 1989
- Schlumberger Industries, S.A.
- Roland Lett
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Axial turbine flowmeters
- Patent number 4,449,410
- Issue date May 22, 1984
- Flonic S.A.
- Roland Lett
- G01 - MEASURING TESTING