Fridtjof E. T. Kelling

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Amsterdam, NL

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Patents Grantslast 30 patents

Information Patent Grant
Centrifuge for separating helium from natural gas
- Patent number 4,182,480
- Issue date Jan 8, 1980
- Ultra Centrifuge Nederland N.V.
- Frederik H. Theyse
- B04 - CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL...