PATENTS

       151.            BAUM, K.  (Didier-Werke A. G.).  [Continuously Operated Vertical Chamber Oven for the Production of Synthesis Gas by the Direct-Current Method.]  German Patent 715,531, Nov. 27, 1941; appl. D. 74,918, filed March 1937 (Cl. 26a-8.01).  Chem. Abs., vol. 38, 1944, p. 2189.