Patents by Inventor Earle D. Stevenson

Earle D. Stevenson 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: D250659
    Type: Grant
    Filed: August 8, 1977
    Date of Patent: December 26, 1978
    Assignee: Youngstown Sheet and Tube Company
    Inventors: Earle D. Stevenson, Gary C. Staffeld