Hans Amann

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Hanover, DE

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Patents Grantslast 30 patents

Information Patent Grant
Device for collecting manganese nodules on the ocean floor
- Patent number 4,652,055
- Issue date Mar 24, 1987
- Preussag Aktiengesellschaft
- Hans Amann
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Recovery of sediments from the bottom of the sea by suspended sucti...
- Patent number 4,398,361
- Issue date Aug 16, 1983
- Preussag Aktiengesellschaft
- Hans Amann
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Recovery of sediments from the bottom of the sea
- Patent number 4,386,473
- Issue date Jun 7, 1983
- Preussag Aktiengesellschaft
- Hans Amann
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING