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Ralf Kewitz

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  • Dusseldorf, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Pressing device for joining workpieces
    • Patent number 6,202,290
    • Issue date Mar 20, 2001
    • Novopress GmbH Pressen und Presswerkzeuge & Co. KG
    • Ralf Kewitz
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...