PATENTS

3174.----- [RUHRCHEMIE, A. G.]   [Regenerating Catalysts].  Austrian Patent 160,722, no date.  Schmidt, J., Das Kohlenoxyd, Akad. Verlagsgeseoll., Leipzig, 1950, p. 157.

See British Patent 484,962 (abs. 3170) and French Patent 826,820 (abs. 3171).