Patent Appeal No. 6726. December 18, 1961. George B. Newitt, Chicago, Ill. (Norman Lettvin, Chicago, Ill., of counsel), for appellant. Clarence W. Moore, Washington, D.C. (George C. Roeming, Washington, D.C., of counsel), for the Commissioner of Patents. Before WORLEY, Chief Judge, and RICH, MARTIN, and SMITH, Judges, and Judge WILLIAM H. KIRKPATRICK. United States Senior District Judge for the Eastern District of Pennsylvania, designated to participate in place of Judge O'CONNELL, pursuant to provisions