DIFF Subgroup
B21D 53/04 of sheet metal
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Making other particular articles > heat exchangers, e.g. radiators, condensers > of sheet metal
CPC:
Making other particular articles (making wire fabrics B21F; making chains or chain parts B21L) > heat exchangers , e.g. radiators, condensers (making finned or ribbed tubes by fixing strip material or the like to tubes B21C37/22) > of sheet metal
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Child Classifications
Navigate with arrow keys, Enter to open