Patents by Inventor Rudolf Ringhofer

Rudolf Ringhofer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Drinking glass
    Patent number: D409444
    Type: Grant
    Filed: August 20, 1997
    Date of Patent: May 11, 1999
    Inventors: Dieter Pelz, Rudolf Ringhofer
  • Drinking glass
    Patent number: D417820
    Type: Grant
    Filed: December 23, 1998
    Date of Patent: December 21, 1999
    Assignee: Brau-Union Osterreich Aktiengesellschaft
    Inventors: Dipl.-ing Dieter Pelz, Rudolf Ringhofer