Patents by Inventor Ralph E. Nordgren

Ralph E. Nordgren 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: D409345
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: May 4, 1999
    Inventor: Ralph E. Nordgren