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Hans-Friedrich Marten

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  • Kreuztal, DE
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  • Information Patent Grant

    Rolling mill
    • Patent number 4,299,103
    • Issue date Nov 10, 1981
    • Schloemann-Siemag Akt.
    • Hans-Friedrich Marten
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...