Application of William P. LUDTKE and George J. Sloan, Jr. Patent Appeal No. 8513.United States Court of Customs and Patent Appeals. May 6, 1971. John O. Tresansky, Washington, D.C., attorney of record, for appellant. S. Wm. Cochran, Washington, D.C., for the Commissioner of Patents. Edward E. Kubasiewicz, Washington, D.C., of counsel. Before RICH, ALMOND, BALDWIN […]