IPC Subgroup
E04D 5/02 of materials impregnated with sealing substances, e.g. roofing felt
Introduced: September 1968
Last revised: January 2006
Full Title
Roof covering by making use of flexible material, e.g. supplied in roll form > of materials impregnated with sealing substances, e.g. roofing felt
Classification Context
- Section:
- FIXED CONSTRUCTIONS
- Class:
- BUILDING
- Subclass:
- ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS