Here is the link associated with the US Patent Office.
http://www.google.com/patents?id=J3xPAAAAEBAJ&pg=PA2&dq=3379873&source=gbs_selected_pages&cad=0_1#PPA2,M1
http://www.google.com/patents?id=J3xPAAAAEBAJ&pg=PA2&dq=3379873&source=gbs_selected_pages&cad=0_1#PPA2,M1