Patent Appeal No. 6447. June 30, 1959. Watson D. Harbaugh, Chicago, Ill., and Robert B. Harmon, Washington, D.C., for appellant. Clarence W. Moore, Washington, D.C. (J. Schimmel, Washington, D.C., of counsel), for Commissioner of Patents. Before WORLEY, Chief Judge, RICH, MARTIN, and SMITH, Judges, and Judge WARREN E. BURGER. United States Circuit Judge for the United States Court of Appeals for the District of Columbia Circuit, designated to participate in place of Judge O'Connell, pursuant to the