Walter Ahrens

Person

  • Alfeld, DE

Patents Grantslast 30 patents

  • Information Patent Grant

    Production of sand moulds

    • Patent number 4,286,937
    • Issue date Sep 1, 1981
    • Alfelder Maschinen- und Modell-Fabrik Kunkel, Wagner & Co. KG
    • Walter Ahrens
    • B22 - CASTING POWDER METALLURGY