CPC Main Group B28C 9/00 General arrangement or layout of plant 5 direct subcodes Child Classifications Navigate with arrow keys, Enter to open B28C 9/002 B28C 9/006 B28C 9/008 B28C 9/02 for producing mixtures of clay or cement with other materials B28C 9/04 the plant being mobile, (B28C5/42, take precedence)