350. CELANESE, CORP. OF AMERICA. Recovery of Oxygenated Compounds. British Patent 659,727. Oct. 24, 1951.

See United States Patent 2,545,889 (abs. 2095).

See abs. 68, 69, 70, 200, 530, 535, 564, 890, 893, 2095, 2349, 2568, 2569.