Patent Appeal No. 8527. June 10, 1971. Donald A. Gardiner, Jr. (Smith, Michael, Bradford Gardiner), Arlington, Va., W. Douglas Carothers, Jr. (Carothers Carothers), Pittsburgh, Pa., attorneys of record, for appellant. Orland M. Christensen, Gordon R. Sanborn (Christensen, Sanborn, Matthews), Seattle, Wash., attorneys of record, for appellee. Before RICH, ALMOND, BALDWIN, LANE, Judges, and LANDIS, Judge, United States Customs Court, sitting by designation. RICH, Judge. This is an appeal from the decision