TREA

John A. Keitch

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  • Akron, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Tundish liner board
    • Patent number D270093
    • Issue date Aug 9, 1983
    • Foseco Trading A.G.
    • Richard A. Lacjak
    • D25 - Building units and construction elements
  • Information Patent Grant

    Tundish lining
    • Patent number D262311
    • Issue date Dec 15, 1981
    • Foseco Trading A.G.
    • Richard A. Lacjak
    • D23 - Environmental heating and cooling