TREA

Horst Thonnes

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  • Remscheid, DE
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  • Information Patent Grant

    Piercing a solid billet
    • Patent number 4,129,022
    • Issue date Dec 12, 1978
    • Mannesmann Aktiengesellschaft
    • Horst Thonnes
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...