Heinz W. L. Steenken

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Patents Grantslast 30 patents

Information Patent Grant
Ship and pier for extraction of valuable materials from the sea bed
- Patent number 3,975,841
- Issue date Aug 24, 1976
- Howaldtswerke-Deutsche Werft Aktiengesellschaft Hamburg und Kiel
- Heinz W. L. Steenken
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT