TREA

Jorg R. Barenwald

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  • Chardon, OH, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Trench drain channel clip support
    • Patent number 5,226,748
    • Issue date Jul 13, 1993
    • Aco Polymer Products, Inc.
    • Jorg R. Barenwald
    • E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
  • Information Patent Grant

    Chemical safety trench drain conduit
    • Patent number 5,213,438
    • Issue date May 25, 1993
    • Aco Polymer Products, Inc.
    • Jorg R. Barenwald
    • E03 - WATER SUPPLY SEWERAGE
  • Information Patent Grant

    Chemical safety conduit or trench
    • Patent number 4,940,359
    • Issue date Jul 10, 1990
    • ACO Polymer Products, Inc.
    • Phillip L. Van Duyn
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES