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Return to Abstracts of Patents Return to Abstracts of Patents 500-749 Patent Abstracts525. ------. [DREYFUS, H.] [Catalytic Reactions.] French Patent 742,760, Mar. 16, 1933. Chem. Abs., vol. 27, 1933. p. 3362. Describes apparatus for carrying out exothermic catalytic reactions, a cooling fluid passing up vertical tubes in the reaction chamber and down tubes inside the first-mentioned tubes. |