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      1249.  ------.  [I. G. FARBENINDUSTRIE A. G.]  [Heat Removal.]  French Patent 814,101, no date.  Schmidt, J., Das Kohlenoxyd, Akad. Verlagsgesell., Leipzig, 1950, p. 174

            Indirect heat exchange with wet steam. 

            See also British Patent 469,618 (abs. 1287), French Patent 814,082 (abs. 1529), German Patent 703,101 (abs. 2678), and Italian Patent 346,769 (abs. 1541).