TREA

Robert N. Heighberger

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  • Eastlake, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Nut with sealing insert
    • Patent number 3,938,571
    • Issue date Feb 17, 1976
    • Robert N. Heighberger
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...