Patents by Inventor Leonhard Augenstein

Leonhard Augenstein 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).

  • Combined writing instrument and random number selector
    Patent number: D331777
    Type: Grant
    Filed: December 6, 1990
    Date of Patent: December 15, 1992
    Inventors: Walter Sedlmeier, Leonhard Augenstein
  • Play case
    Patent number: D340090
    Type: Grant
    Filed: May 8, 1991
    Date of Patent: October 5, 1993
    Inventor: Leonhard Augenstein
  • Lotto toy
    Patent number: D394284
    Type: Grant
    Filed: April 18, 1996
    Date of Patent: May 12, 1998
    Inventor: Leonhard Augenstein