Manufacturing: Heavy   << 1 2 >> Whitin Machine Works, 1920? Irving Pitt Manufacturing Company, 1924 Wyomissing Industries, 1936 Moore Drop Forging, 1944 Wellman Engineering Company, 1944 Fairbanks, Morse & Co., 1945 General Machinery Corporation, 1945 Whitin Machine Works, 1945 E.W. Bliss Co., 1948