DIFF Subgroup
E04D 1/18 of metal
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Roof covering by making use of tiles, slates, shingles, or other small roofing elements > Roofing elements shaped as plain tiles or shingles, i.e. with flat outer surface > of metal
CPC:
Roof covering by making use of tiles, slates, shingles, or other small roofing elements (roofing supports E04D12/00) > Roofing elements shaped as plain tiles or shingles, i.e. with flat outer surface (E04D1/28, E04D1/30 take precedence) > of metal
No child classifications to compare. This is a leaf node in both IPC and CPC.