CPC Subgroup
E01B 29/14 for lifting sleepers up to the rails (lifting devices in general B66F)
Full Title
Laying, rebuilding, or taking-up tracks; Tools or machines therefor (E01B27/00, E01B31/00 take precedence) > Transporting, laying, removing or renewing sleepers (E01B29/05 takes precedence; carrying devices B65G7/12) > under, or from under, installed rails > for lifting sleepers up to the rails (lifting devices in general B66F)