PATENT

3345.----- [SIEMENS-SCHUCKERTWERKE A. G.]  [Temperature Regulation in Benzine Synthesis.]  Austrian Patent 153,232, no date.  Schmidt, J. Das Kohlenoxyd, Akad. Verlagsgesell.  Leipzig, 1950, p. 163

See British Patent 483,418 (abs. 3344) and French Patent 819,808 (abs. 3343).