Karl-Friedrich Koch

Person

  • Duisburg, DE

Patents Grantslast 30 patents

  • Information Patent Grant

    Bridge element

    • Patent number 4,355,431
    • Issue date Oct 26, 1982
    • Fried. KRUPP Gesellschaft mit beschrankter Haftung
    • Wolfgang Diefendahl
    • E01 - CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES