of specified materials, or of combinations of materials, not covered by any of groups E04D3/04, E04D3/06 or E04D3/16

Introduced: September 1968

Title

Titles differ between systems:

IPC: of specified materials, or of combinations of materials, not covered by any of groups , or

CPC: of specified materials, or of combinations of materials, not covered by any of groups E04D3/04, E04D3/06 or E04D3/16

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 specified materials, or of combinations of materials, not covered by any of groups , or

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 specified materials, or of combinations of materials, not covered by any of groups E04D3/04, E04D3/06 or E04D3/16

No child classifications to compare. This is a leaf node in both IPC and CPC.