Thomas J. Ruyter

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Schagen, NL

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Patents Grantslast 30 patents

Information Patent Grant
Method and device for maintaining tools at a level
- Patent number 4,584,784
- Issue date Apr 29, 1986
- Tjako A. Wolters
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Balanced supplemental water bleed for suction dredgers
- Patent number 4,412,790
- Issue date Nov 1, 1983
- Ballast-Nedam Groep N.V.
- Thomas J. Ruyter
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING