DIFF Subgroup
E04F 11/002 Full Title
Stairways, ramps, or like structures (mounting or marking-off stairways E04F21/26; of temporary construction E04G27/00; means for facilitating access to swimming pools E04H4/144; ); Balustrades; Handrails (ladders permanently attached to fixed structures E06C9/00)
Of 2 combined children, 0 exist in both systems.
2 codes are CPC-only extensions.
Note: 2 CPC extensions are marked as secondary classification only.