Joannes A. Rooymans

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Muiderberg, NL

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Patents Grantslast 30 patents

Information Patent Grant
Method and device for loosening stony soil
- Patent number 4,162,102
- Issue date Jul 24, 1979
- Ballast-Nedam Groep N.V.
- Joannes A. Rooymans
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING