Patents by Inventor Howard Hewitt

Howard Hewitt 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 reinforcing rod spacer
    Patent number: D279164
    Type: Grant
    Filed: May 9, 1984
    Date of Patent: June 11, 1985
    Inventors: Diana L. Mitchell, Howard Hewitt
  • Concrete reinforcing rod spacer
    Patent number: D279352
    Type: Grant
    Filed: June 19, 1984
    Date of Patent: June 25, 1985
    Inventors: Diana L. Mitchell, Howard Hewitt