CPC Subgroup
B21L 11/04 the ends being pierced or punched to form eyes
Full Title
Making chains or chain links of special shape > each link being formed of a single member of which both ends are bent or shaped to engage the middle portions of the next link > the ends being pierced or punched to form eyes
1 direct subcode
Child Classifications
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- B21L 11/06 the workpiece being of thin strip metal