DIFF Subgroup
B31B 50/732 Full Title
Making rigid or semi-rigid containers, e.g. boxes or cartons > Uniting opposed surfaces or edges; Taping > by mechanically interlocking integral parts, e.g. by tongues and slots (interconnecting side walls during folding by plungers moving through folding dies B31B50/46)
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.