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Return to Abstracts of Patents Return to Abstracts of Patents 1250-1499 Patent Abstracts1381. ------. [I. G. FARBENINDUSTRIE, A. G.] [Oxygen-Containing Organic Compounds.] French Patent 593,942, Feb. 4, 1925. Chem. Zentralb., 1928, I. p. 583. See United States Patent 1,841,910 (abs. 2684). |