Ruthild Winkler

Person

  • 3431 Berlepsch, uber Witzenhausen, DT

Patents Grantslast 30 patents

  • Information Patent Grant

    Educational game

    • Patent number 4,043,559
    • Issue date Aug 23, 1977
    • Manfred Eigen
    • G09 - EDUCATION CRYPTOGRAPHY DISPLAY ADVERTISING SEALS