CPC Main Group
B21L 9/00 Making chains or chain links, the links being composed of two or more different parts, e.g. drive chains (B21L1/04, B21L7/00, B21L11/14, B21L13/00 take precedence)
1 direct subcode
Child Classifications
Navigate with arrow keys, Enter to open
- B21L 9/02 of roller-chain or other plate-link type