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Return to Abstracts of Patents Return to Abstracts of Patents 250-499 Patent Abstracts307. ------. [CARBO-NORIT-UNION VERWALTUNGS-G. M. B. H.] Synthesis Oils. British Patent 482,093, Mar. 23, 1938. Chem. Abs., vol. 32, 1938, p. 6851. This corresponds to French Patent 824,002 (abs. 309). |