Robert Ludwigson

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Goteborg, SE

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Patents Grantslast 30 patents

Information Patent Grant
Method for DP-conversion of an existing semi-submersible rig
- Patent number 6,247,421
- Issue date Jun 19, 2001
- GVA Consultants AB
- Robert Ludwigson
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT

Patents Applicationslast 30 patents

Information Patent Application
Low heave motion semi-submersible vessel
- Publication number 20010026733
- Publication date Oct 4, 2001
- Robert Ludwigson
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT