TREA

Michael Grether heir

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Patents Grantslast 30 patents

  • Information Patent Grant

    Compound glass element
    • Patent number 5,260,112
    • Issue date Nov 9, 1993
    • Geilinger AG
    • Paul W. Grether
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
  • Information Patent Grant

    Glazing element
    • Patent number 5,237,787
    • Issue date Aug 24, 1993
    • Geilinger AG
    • Paul W. Grether
    • E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS