US8261231 "claims benefit to U.S. Provisional Patent Application No. 61/472,609, which was filed on Apr. 6, 2011... The contents of the above-identified applications are incorporated by reference in their entirety as if recited in full herein."
I am having difficulty finding the provisional patent application, so that we can examine its contents and know what portions of US8261231 are effective February 14, 2012 and what portions are effective April 6, 2011. Anyone know how we can search for US provisional patents?