DIFF Subgroup
A63B 37/12 Special coverings
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Solid balls; Marbles > Special coverings
CPC:
Solid balls; Marbles (heavy throwing balls A63B65/06) > Special coverings
Of 1 combined children, 0 exist in both systems.
1 codes are CPC-only extensions.
Note: 1 CPC extensions are marked as secondary classification only.
Child Classifications
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