Patents by Inventor Dennis R. Graff

Dennis R. Graff 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: D348828
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: July 19, 1994
    Inventor: Dennis R. Graff