PATENTS

      1642. ------.  [INTERNATIONAL HYDROCARBON SYNTHESIS CO.]  [Catalyst Chamber.]  Italian Patent 391,251, no date.  Schmidt, J., Das Kohlenoxyd, Akad. Verlagsgesell., Leipzig, 1950. p. 163.

            Catalyst chamber with catalyst tubes longer than 5 m.

            See British Patent 567,609 (abs. 2712) and French Patent 870,213 (abs. 1664).