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Patent Abstracts

      939.  ------.  [HARTER, H.]  Apparatus for Exothermic Catalytic Gas Reactions.  British Patent 325,028, Nov. 24, 1928. Chem. Abs., vol. 24, 1930, p. 3678.

            Heat insulating cylinder is placed between a reaction cylinder and an outer pressure-resisting wall.  Describes various details of construction.