for raising or levelling sunken paving; for filling voids under paving; for introducing material into substructure (consolidating soil in general E02D3/12)

Full Title

Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces (apparatus for reconditioning of salvaged non-hydraulic compositions E01C19/10) > Devices or arrangements for working the finished surface (working freshly laid paving E01C19/42 - E01C19/44, E01C23/02; mining picks E21C35/18); Devices for repairing the surface of damaged paving; > for raising or levelling sunken paving; for filling voids under paving; for introducing material into substructure (consolidating soil in general E02D3/12)