2811. ----- [ROELEN, O., AND FEISST, W.] (Studien- u. Verwertungs-G. m. b. H.) Desulfurizing Gases. United States Patent 2,110,240, Mar. 8, 1938; appl. filed Jan. 23, 1935. Chem. Abs., vol. 32, 1938, p. 3588.

See German Patent 651,462 (abs. 2812)