DIFF Subgroup
B28B 1/503 Full Title
Producing shaped articles from the material (using presses B28B3/00; shaping on moving conveyors B28B5/00; producing tubular articles B28B21/00 ) > specially adapted for producing articles of expanded material, e.g. cellular concrete (chemical aspects C04B)
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.