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PCE
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CPC Subgroup
B21L 11/10

the chain links having opposed correspondingly shaped cylindrical and hook-like parts of which one parts forms a hinge-like support for the adjacent link (B21L11/02 takes precedence)

Full Title

Making chains or chain links of special shape > the chain links having opposed correspondingly shaped cylindrical and hook-like parts of which one parts forms a hinge-like support for the adjacent link (B21L11/02 takes precedence)