E04D 11/02 Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition (gravelling of flat roofs E04D7/00; venting or ventilation E04D13/17)
Introduced: September 1968
Title
Titles differ between systems:
IPC: Built-up roofs, i.e. consisting of two or more layers bonded together , at least one of the layers being of watertight composition
CPC: Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition (gravelling of flat roofs E04D7/00; venting or ventilation E04D13/17)
Full Title
Full titles differ between systems:
Roof covering, as far as not restricted to features covered by only one of groups; Roof covering in ways not provided for by groups > Built-up roofs, i.e. consisting of two or more layers bonded together , at least one of the layers being of watertight composition
Roof covering, as far as not restricted to features covered by only one of groups E04D1/00 - E04D9/00; Roof covering in ways not provided for by groups E04D1/00 - E04D9/00, > Build-up roofs, i.e. consisting of two or more layers bonded together in situ, at least one of the layers being of watertight composition (gravelling of flat roofs E04D7/00; venting or ventilation E04D13/17)
No child classifications to compare. This is a leaf node in both IPC and CPC.