TREA

Franz Berrenberg

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  • Haan, DT
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  • Information Patent Grant

    Method of heat forming of workpieces
    • Patent number 4,094,048
    • Issue date Jun 13, 1978
    • Franz Berrenberg
    • Gerhard Broder
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...

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