Patents by Inventor Stephen D. Hale

Stephen D. Hale 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: D253435
    Type: Grant
    Filed: November 11, 1977
    Date of Patent: November 13, 1979
    Inventor: Stephen D. Hale