2738. ------. [RAMAGE, A. S.] (Coals & Chemicals, Ltd.). Aromatic Hydrocarbons From Olefinic Gases. United States Patent 1,812,372, June 30, 1931; appl. filed May 18, 1928, Serial No. 278,916. Chem. Abs., vol. 25, 1931, p. 4889.

See British patent 335,353 (abs. 2737).