Patents by Inventor Leonard Ralph Sorge

Leonard Ralph Sorge 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).

  • Shoe sole
    Patent number: D247139
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: February 7, 1978
    Assignee: Eltra Corporation
    Inventor: Leonard Ralph Sorge
  • Shoe sole
    Patent number: D247140
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: February 7, 1978
    Assignee: Eltra Corporation
    Inventor: Leonard Ralph Sorge