No. 73-1760. Argued January 29, 1974. Decided May 31, 1974. Louis S. Belkin, Cleveland, Ohio, for petitioner; Alan S. Belkin, Belkin Belkin, Cleveland, Ohio, on brief. Stuart Rosenblum, N.L.R.B., for respondent; Peter G. Nash, Gen. Counsel, John S. Irving, Deputy Gen. Counsel, Patrick Hardin, Associate Gen. Counsel, Elliott Moore, Deputy Associate Gen. Counsel, Robert A. Giannasi, Asst. Gen. Counsel, David Miller, Atty., N.L.R.B., Washington, D.C., on brief. Petition for review from the National