Patent Appeal No. 8474. June 24, 1971. Norman Lettvin, Chicago, Ill., attorney of record, for appellant. S. Wm. Cochran, Washington, D.C., for the Commissioner of Patents; R.V. Lupo, Washington, D.C., of counsel. Before RICH, ALMOND, BALDWIN and LANE, Judges, and RE, Judge, United States Customs Court, sitting by designation. BALDWIN, Judge. McLaughlin has appealed from the decision of the Patent Office Board of Appeals sustaining the rejection of claims 13, 14 and 15 in his application as unpatentable