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Richard Frank Hill

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  • Chagrin Falls, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Boron nitride seal and method of use
    • Patent number 5,678,832
    • Issue date Oct 21, 1997
    • Advanced Ceramics Corporation
    • Richard Frank Hill
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...