Patents by Inventor Keith L. Derr

Keith L. Derr 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).

  • Mounting block for a printing element
    Patent number: D542836
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: May 15, 2007
    Assignee: Dimensions Acquisitions, L.L.C.
    Inventors: Keith L. Derr, Carol A. Siegel