Patents by Inventor Edward L. Hardin

Edward L. Hardin 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).

  • Concrete block
    Patent number: D246386
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: November 15, 1977
    Inventor: Edward L. Hardin