Jens-Holger Hellmann

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Hamburg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Icebreaking ship
- Patent number 5,325,803
- Issue date Jul 5, 1994
- Thyssen Nordseewerke GmbH
- Peter Jans
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Icebreaking ship
- Patent number 5,231,944
- Issue date Aug 3, 1993
- Thyssen Nordseewerke GmbH
- Peter Jans
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Ice breaker
- Patent number 4,942,837
- Issue date Jul 24, 1990
- Thyssen Nordseewerke GmbH
- Jens-Holger Hellmann
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT
Information Patent Grant
Ice breaker
- Patent number 4,800,831
- Issue date Jan 31, 1989
- Thyssen Nordseewerke GmbH
- Jens H. Hellmann
- B63 - SHIPS OR OTHER WATERBORNE VESSELS RELATED EQUIPMENT