Patent Appeal No. 8621. May 18, 1972. William C. Long, David Dick, New York City, attorneys of record, for appellants. S. Wm. Cochran, Washington, D.C., for the Commissioner of Patents. Fred W. Sherling, Washington, D.C., of counsel. Appeal from the Patent Office Board of Appeals. Before RICH, ALMOND, BALDWIN and LANE, Judges, and RAO, Judge, United States Customs Court, sitting by designation. BALDWIN, Judge. This appeal is from the decision of the Patent Office Board of Appeals affirming the examiner's