No. 14286. Argued October 10, 1963. Decided March 13, 1964. Abraham E. Freedman, Philadelphia, Pa. (Martin J. Vigderman, Wilfred F. Lorry, Freedman, Landy Lorry, Philadelphia, Pa., on the brief), for petitioner. Leo Maguire, Atty., N.L.R.B., Washington, D.C. (Arnold Ordman, Gen. Counsel, Dominick L. Manoli, Associate Gen. Counsel, Marcel Mallet-Prevost, Asst. Gen. Counsel, Melvin Pollack, Atty., N.L.R.B., on the brief), for respondent. Earle K. Shawe, Baltimore, Md. (Sidney J. Barban, Baltimore,