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Return to Abstracts of Patents Return to Abstracts of Patents 500-749 Patent Abstracts675. ------. [FISCHER, F., AND PICHLER, H.] [Hydrocarbons.] French Patent 686,040, Dec. 10, 1928. Chem. Zentralb., 1931, I, p. 1708; Chem. Abs., vol. 24, 1930, p. 5764. See British Patents 316,126 (abs. 672) and 319,340 (abs. 665). |