Patent Appeal No. 7964. July 3, 1968. Anthony A. Juettner, Gene O. Enockson, William C. Babcock, Minneapolis, Minn., George R. Jones, David S. Abrams, Bowie, Md., Beale Jones, Washington, D.C., for appellants. Joseph Schimmel, Washington, D.C. (Raymond E. Martin, Washington, D.C., of counsel), for the Commissioner of Patents. Before WORLEY, Chief Judge, and Judges RICH, SMITH, ALMOND, and KIRKPATRICK. Senior District Judge, Eastern District of Pennsylvania, sitting by designation. ARTHUR M. SMITH