CPC Subgroup
A63B 37/02 Special cores
Full Title
Solid balls; Marbles (heavy throwing balls A63B65/06) > Special cores
4 direct subcodes
Child Classifications
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- A63B 37/04 Rigid cores
- A63B 37/06 Elastic cores
- A63B 37/08 Liquid cores; Plastic cores
- A63B 37/10 with eccentric centre of gravity