Andre Defrance

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Pont A Mousson, FR

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Patents Grantslast 30 patents

Information Patent Grant
Manhole assembly with T-shaped hinge
- Patent number 4,840,514
- Issue date Jun 20, 1989
- Pont-A-Mousson S.A.
- Andre Defrance
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING