TREA

Helmut Klenk

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  • 6101 Modautal, Ernsthofen, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    One-way conduit closure
    • Patent number 4,215,716
    • Issue date Aug 5, 1980
    • Adam Klenk
    • E03 - WATER SUPPLY SEWERAGE