Patent Appeal No. 6452. September 30, 1959. Cromwell, Greist Warden, Chicago, Ill. (Raymond L. Greist, Chicago, Ill., of counsel), for appellant. Clarence W. Moore, Washington, D.C. (S. Wm. Cochran, Washington, D.C., of counsel), for Commissioner of Patents. Before WORLEY, Chief Judge, 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 the