CPC Subgroup
B21L 15/02 Twisting already closed links
Full Title
Finishing or dressing chains or chain links, e.g. removing burr material, calibrating (B21L9/06 takes precedence) > Twisting already closed links
B21L 15/02 Finishing or dressing chains or chain links, e.g. removing burr material, calibrating (B21L9/06 takes precedence) > Twisting already closed links