Pierre Calvin

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Linas, FR

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Patents Grantslast 30 patents

Information Patent Grant
Discontinuance device for a central reserve
- Patent number 6,402,421
- Issue date Jun 11, 2002
- Colas
- Caroline Ottavi
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
Information Patent Grant
Drying time accelerator for a water-based paint, corresponding pain...
- Patent number 6,333,068
- Issue date Dec 25, 2001
- Colas
- Graziella Durand
- E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES