TREA

Thorvald Madland

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  • Arlington Heights, IL, US
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Patents Grantslast 30 patents

  • Information Patent Grant

    Sliding door starter and closer
    • Patent number 4,390,196
    • Issue date Jun 28, 1983
    • The Youngstown Steel Door Company
    • Thorvald Madland
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Railway car door driver
    • Patent number 4,344,366
    • Issue date Aug 17, 1982
    • The Youngstown Steel Door Company
    • Thorvald Madland
    • B61 - RAILWAYS
  • Information Patent Grant

    Rail house car door wear skids
    • Patent number 4,178,857
    • Issue date Dec 18, 1979
    • The Youngstown Steel Door Company
    • Thorvald Madland
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Door driver
    • Patent number 4,162,591
    • Issue date Jul 31, 1979
    • The Youngstown Steel Door Company
    • Thorvald Madland
    • E05 - LOCKS KEYS WINDOW OR DOOR FITTINGS SAFES
  • Information Patent Grant

    Door assemblies for closing rail car end openings
    • Patent number 3,938,446
    • Issue date Feb 17, 1976
    • The Youngstown Steel Door Co.
    • Robert F. Seitz
    • B61 - RAILWAYS