TREA

Franck Delavaquerie

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  • Givet, FR
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Patents Grantslast 30 patents

  • Information Patent Grant

    Devices for the grooving of tubes
    • Patent number 5,526,663
    • Issue date Jun 18, 1996
    • Trefimetaux
    • Jean-Louis Sauvonnet
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...