Juergen H. Ohrt

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Kreis, Rensdburg, DT

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Patents Grantslast 30 patents

Information Patent Grant
Flexible joints for marine risers
- Patent number 4,068,868
- Issue date Jan 17, 1978
- Vetco Offshore Industries, Inc.
- Juergen H. Ohrt
- E21 - EARTH DRILLING MINING