DIFF Subgroup
B28B 7/16 Moulds for making shaped articles with cavities or holes open to the surface
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Moulds; Cores; Mandrels > Moulds for making shaped articles with cavities or holes open to the surface
CPC:
Moulds; Cores; Mandrels (specially adapted for the production of the tubular articles B28B21/00; ) > Moulds for making shaped articles with cavities or holes open to the surface
CPC subdivides this area 5x more granularly than IPC with 4 additional codes.
4 codes are CPC-only extensions.
Child Classifications
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