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Wilhelmus Hubertus Paulus Maria Heijnen

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Patents Grantslast 30 patents

  • Information Patent Grant

    Method for sealing an annular space in a wellbore
    • Patent number 9,222,330
    • Issue date Dec 29, 2015
    • Maersk Olie OG Gas A/S
    • Wilhelmus Hubertus Paulus Maria Heijnen
    • C09 - DYES PAINTS POLISHES NATURAL RESINS ADHESIVES MISCELLANEOUS COMPOSITION...