Patents by Inventor Hans L. Wihlke

Hans L. Wihlke 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).

  • Leaf for a photograph album
    Patent number: D262040
    Type: Grant
    Filed: December 29, 1978
    Date of Patent: November 24, 1981
    Inventor: Hans L. Wihlke
  • Leaf for a photograph album
    Patent number: D266770
    Type: Grant
    Filed: August 24, 1981
    Date of Patent: November 2, 1982
    Inventor: Hans L. Wihlke
  • Leaf for a photograph album
    Patent number: D266771
    Type: Grant
    Filed: August 24, 1981
    Date of Patent: November 2, 1982
    Inventor: Hans L. Wihlke