DIFF Subgroup
E04D 3/16 of metal
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Roof covering by making use of flat or curved slabs or stiff sheets > of plane slabs, slates, or sheets, or in which the cross-section is unimportant > of metal
CPC:
Roof covering by making use of flat or curved slabs or stiff sheets (E04D1/00 takes precedence; built-up roofs E04D11/02) > of plane slabs, slates, or sheets, or in which the cross-section is unimportant (E04D3/35 takes precedence) > of metal
No child classifications to compare. This is a leaf node in both IPC and CPC.