Patents by Inventor Leo L. Hammerschmidt

Leo L. Hammerschmidt 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).

  • Patent number: D251766
    Type: Grant
    Filed: January 25, 1978
    Date of Patent: May 8, 1979
    Assignee: Edna M. Hammerschmidt
    Inventor: Leo L. Hammerschmidt