TREA

Martin Henning

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  • Hamm, DE
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Patents Grantslast 30 patents

  • Information Patent Grant

    Welded pipe connection
    • Patent number 4,579,273
    • Issue date Apr 1, 1986
    • Hoesch Werke AG
    • Karl Dahmen
    • B23 - MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR
  • Information Patent Grant

    Method of and device for producing multi-layer pipes
    • Patent number 4,247,033
    • Issue date Jan 27, 1981
    • Hoesch Werke Aktiengesellschaft
    • Karl Dahmen
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...