Hendrik Franciscus Wegewijs

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Utrecht, NL

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Patents Grantslast 30 patents

Information Patent Grant
Method and device for sucking up a solid substance from a stock
- Patent number 4,020,573
- Issue date May 3, 1977
- Ballast-Nedam Group N.V.
- Hendrik Franciscus Wegewijs
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING