Jan Mantingh

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9511 PT Gieterveen, NL

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Patents Grantslast 30 patents

Information Patent Grant
Mobile earth mover having a scraper blade
- Patent number 4,969,279
- Issue date Nov 13, 1990
- Jan Mantingh
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information Patent Grant
Mobile earth mover bowl with loading rotor
- Patent number 4,928,409
- Issue date May 29, 1990
- Jan Mantingh
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING