Patents by Inventor Keith L. Darnall

Keith L. Darnall 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).

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    Patent number: D288465
    Type: Grant
    Filed: January 30, 1984
    Date of Patent: February 24, 1987
    Inventors: Keith L. Darnall, Gary A. Hudson