Treads

Introduced: January 1995

Full Title

Full titles differ between systems:

IPC:

Stairways, ramps, or like structures; Balustrades; Handrails > Stairways; Layouts thereof > Treads

CPC:

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) > Stairways; Layouts thereof > Treads

CPC subdivides this area 2x more granularly than IPC with 5 additional codes.

5 codes are CPC-only extensions.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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E04F 11/1041 CPC only CPC only
E04F 11/1042 CPC only CPC only
E04F 11/1043 CPC only CPC only
E04F 11/1045 CPC only CPC only
E04F 11/108 of wood since 1995 IPC+CPC Available in IPC and CPC
E04F 11/112 of metal since 1995 IPC+CPC Available in IPC and CPC
E04F 11/116 of stone, concrete or like material since 1995 IPC+CPC Available in IPC and CPC
E04F 11/16 Surfaces thereof; Protecting means for edges or corners thereof ( floor fabrics, fastenings therefor A47G27/00) +1 CPC IPC+CPC Available in IPC and CPC
E04F 2011/1046 2nd only +2 CPC CPC only CPC only