Siegfried Hoffmeier

Person

  • Dusseldorf, DE

Patents Grantslast 30 patents

  • Information Patent Grant

    Extrusion press for extruding tubes

    • Patent number 4,206,626
    • Issue date Jun 10, 1980
    • Schloemann-Siemag Aktiengesellschaft
    • Horst H. Groos
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...