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Norman J. Hannigan

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  • Katy, TX, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Vessel access port
    • Patent number 4,398,923
    • Issue date Aug 16, 1983
    • BS&B Engineering Company, Inc.
    • Norman J. Hannigan
    • C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...