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Return to Abstracts of Patents Return to Abstracts of Patents 1250-1499 Patent Abstracts1256. ------. [I. G. FARBENINDUSTRIE A. G.] Hydrocarbon Synthesis. British Patent 292,850, no date. Schmidt, J., Das Kohlenoxyd, Akad. Verlagsgesell., Leipzig, 1950, p. 216. Reaction gases are preheated. |