Patent Appeal No. 6816. July 25, 1962. George H. Willits, Alexander F. Baillio, Lewis D. Burch Doonan Dwight McGraw, Detroit, Mich. (Frank J. Soucek, Washington, D.C., 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