TREA

Ray Andrews

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  • Washington, PA, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Glass coating
    • Patent number 4,975,301
    • Issue date Dec 4, 1990
    • The O. Hommel Company
    • Ray Andrews
    • C03 - GLASS MINERAL OR SLAG WOOL
  • Information Patent Grant

    Glass enamel
    • Patent number 4,837,383
    • Issue date Jun 6, 1989
    • Ray Andrews
    • C03 - GLASS MINERAL OR SLAG WOOL