by specially-profiled marginal portions of the slabs or sheets

Introduced: September 1968

Full Title

Full titles differ between systems:

IPC:

Roof covering by making use of flat or curved slabs or stiff sheets > Connecting; Fastening > by specially-profiled marginal portions of the slabs or sheets

CPC:

Roof covering by making use of flat or curved slabs or stiff sheets (E04D1/00 takes precedence; built-up roofs E04D11/02) > Connecting; Fastening > by specially-profiled marginal portions of the slabs or sheets

Of 7 combined children, 2 exist in both systems.

4 codes are CPC-only extensions, 1 exist only in IPC.

Note: 3 CPC extensions are marked as secondary classification only.

1 shared codes have differing titles between IPC and CPC.

Child Classifications

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E04D 2003/3612 2nd only CPC only CPC only
E04D 2003/3615 2nd only CPC only CPC only
E04D 2003/3617 2nd only CPC only CPC only
E04D 3/362 by locking the edge of one slab or sheet within the profiled marginal portion of the adjacent slab or sheet, e.g. using separate connecting elements IPC+CPC Available in IPC and CPC
E04D 3/363 with snap action (E04D3/366 takes precedence) IPC+CPC Available in IPC and CPC
E04D 3/364 CPC only CPC only
E04D 3/3645 by interference fitting since 1985 IPC only IPC only