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Return to Abstracts of Patents Return to Abstracts of Patents 250-499 Patent Abstracts266. BRUTZKUS, M. [Catalyst Chamber.] Swiss Patent 118,972, no date. Das Kohlenoxyd, by J. Schmidt. Akad. Verlagsgesell., Leipzig, 1950, p. 161. See United States Patent 1,832,762 (abs. 270). |