 In October, 1963 Oldendorf finally received a U.S. patent for a "radiant energy apparatus for investigating selected areas of interior objects obscured by dense material,".This work was recognized by Godfrey Hounsfield as the only other attempt at tomographic reconstruction, and, indeed, formed the basis of much of his Nobel prize-winning work.The prototype developed by Dr. Oldendorf, however, did not lead to the development of the first industrial CAT scanning device.