Return to Abstracts of Patents Return to Abstracts of Patents 250-499 Patent Abstracts340. CASALE-SACCHI, M. Apparatus for Heat Interchange and Catalytic Reactions Between Gases Under Pressure at High Temperature. British Patent 328,139, May 22, 1929. Chem. Abs., vol. 24, 1930. p. 4965. Describes various structural details. |