DIFF Subgroup
E04D 5/141 Full Title
Roof covering by making use of flexible material, e.g. supplied in roll form (using stiff sheets E04D3/00; gravelling of flat roofs E04D7/00 ; built-up roofs E04D11/02) > Fastening means therefor
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.