Patent Appeal No. 6193. April 3, 1956. Hill, Sherman, Meroni, Gross Simpson, Chicago, Ill. (Carlton Hill, Chicago, Ill., and Wm. T. Estabrook, Washington, D.C., of counsel), for appellant. Thomas O. Arnold, Houston, Tex. (Hutcheson, Taliaferro Hutcheson, Houston, Tex., of counsel), for appellee. Before JOHNSON, Acting Chief Judge, and WORLEY and JACKSON, retired, Judges. WORLEY, Judge. This is an appeal from the decision of the Assistant Commissioner of Patents affirming the decision of the Examiner