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Thomas Kramer-Wasserka

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  • Werne, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    High pressure water valve
    • Patent number 4,660,891
    • Issue date Apr 28, 1987
    • Institut Cerac SA.
    • Thomas Kramer-Wasserka
    • E21 - EARTH DRILLING MINING