11. ALBERTS. L. (Ruhrchemie A. G.). [Apparatus for Treating Hot Gases With Solid Purifying Materials or Catalysts Arranged in Superimposed Layers.] German Patent 677,111, June 20, 1939 (Cl. 26 d-5). Schmidt, J., Das Kohlenoxyd, Akad, Verlagsgesell., Le

PATENTS

11. ALBERTS. L. (Ruhrchemie A. G.). [Apparatus for Treating Hot Gases With Solid Purifying Materials or Catalysts Arranged in Superimposed Layers.] German Patent 677,111, June 20, 1939 (Cl. 26 d-5). Schmidt, J., Das Kohlenoxyd, Akad, Verlagsgesell., Leipzig, 1950. p. 167: Chem. Abs., vol. 33. 1939. p. 6664.