TREA

William P. O'Donnell

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  • Wilmington, DE, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Slipline adjustable manhole seal
    • Patent number 4,702,645
    • Issue date Oct 27, 1987
    • Press-Seal Gasket Corporation
    • Harry W. Skinner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
  • Information Patent Grant

    Slipline adjustable manhole seal
    • Patent number 4,619,555
    • Issue date Oct 28, 1986
    • Press-Seal Gasket Corporation
    • Harry W. Skinner
    • F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...