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Clemens Arenhovel

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  • Oberhausen, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Process and apparatus for producing plastic pipe
    • Patent number 4,547,142
    • Issue date Oct 15, 1985
    • Ruhrchemie Aktiengesellschaft
    • Clemens Arenhovel
    • B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL