LEVITON MANUFACTURING COMPANY, INC., PETITIONER, v. NATIONAL LABOR RELATIONS BOARD, RESPONDENT. No. 73-1152.United States Court of Appeals, First Circuit.Argued September 10, 1973. Decided November 8, 1973. Page 687 Richard W. Zacks, Providence, R. I., with whom Vernon C. Stoneman, Stoneman, Chandler Miller, Boston, Mass., and Winograd, Shine Zacks, Providence, R. I., were on brief, for […]