DIFF Subgroup
B28B 7/18 the holes passing completely through the article
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 > the holes passing completely through the article
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 > the holes passing completely through the article
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Child Classifications
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