CPC Subgroup
F16G 13/04 Toothed chains
Full Title
Chains (making thereof B21L) > Driving-chains (specially adapted to gearings with variable gear-ratio F16H9/00) > Toothed chains
F16G 13/04 Chains (making thereof B21L) > Driving-chains (specially adapted to gearings with variable gear-ratio F16H9/00) > Toothed chains