1624. ------. [IMPERIAL CHEMICAL INDUSTRIES, LTD.] [Apparatus for Carrying Out Catalytic Exothermic Reactions Under Pressure.] German Patent 482,925. Apr. 13, 1926. Chem. Abs., vol. 24, 1930. p. 532.

Apparatus is primarily intended for NH₂ synthesis and consists of a catalytic chamber for the gases, surrounded by heating tubes embedded in nonconducting material, and the whole enclosed in pressure-resisting walls.