Johannes C. Tjebbes

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Zeist, NL

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Patents Grantslast 30 patents

Information Patent Grant
Dredged soil conveying vessel
- Patent number 4,505,214
- Issue date Mar 19, 1985
- Ballast-Nedam Groep N.V.
- Johannes C. Tjebbes
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING