DIFF Subgroup
B28B 21/86 Cores (in general B28B7/00)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Cores
CPC: Cores (in general B28B7/00)
Full Title
Full titles differ between systems:
IPC:
Methods or machines specially adapted for the production of tubular articles > Cores
CPC:
Methods or machines specially adapted for the production of tubular articles > Cores (in general B28B7/00)
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
1 shared codes have differing titles between IPC and CPC.
Child Classifications
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- B28B 21/88 adjustable, collapsible or expansible (using inflatable cores B28B21/20 ) IPC+CPC Available in IPC and CPC