|
|
Return to Abstracts of Patents Return to Abstracts of Patents 1000-1249 Patent Abstracts1237. ------. [I. G. FARBENINDUSTRIE A. G.] Gas Purification. British Patent 571,285, no date. Schmidt, J., Das Kohlenoxyd, Akad. Verlagsgesell., Leipzig, 1950, p. 166. See United States Patent 1,766,763 (abs. 2685). |