DIFF Subgroup
E04C 5/10 Ducts
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Reinforcing elements, e.g. for concrete; Auxiliary elements therefor > Members specially adapted to be used in prestressed constructions > Ducts
CPC:
Reinforcing elements, e.g. for concrete; Auxiliary elements therefor ( material composition C21, C22) > Members specially adapted to be used in prestressed constructions > Ducts
No child classifications to compare. This is a leaf node in both IPC and CPC.