Return to Abstracts of Patents Return to Abstracts of Patents 500-749 Patent Abstracts708. ------. [FISCHER, F., AND TROPSCH, H.] [Synthesis Catalyst.] Swiss Patent 125,468, no date. Schmidt, J., Das Kohlenoxyd, Akad. Verlagsgesell., Leipzig, 1950, p. 150. See United States Patent 1,746,464 (abs. 703). |