Patents by Inventor Roger D. Whittington

Roger D. Whittington 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: D324778
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: March 24, 1992
    Inventor: Roger D. Whittington