Patents by Inventor Chris R. Helman

Chris R. Helman 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: D575274
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: August 19, 2008
    Inventors: Robert St. Clair Donovan, Chris R. Helman, Paul P. Griffin