Willi Zimmermann

Person

  • St. Augustin, DE

Patents Grantslast 30 patents

  • Information Patent Grant

    Method for manufacturing internally geared parts

    • Patent number 6,026,666
    • Issue date Feb 22, 2000
    • Dynamit Nobel Aktiengesellschaft
    • Willi Zimmermann
    • B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...