Patent classifications
E
FIXED CONSTRUCTIONS
Load children
E04
BUILDING
Load children
E04D
ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
Load children
1/00
Roof covering by making use of tiles, slates, shingles, or other small roofing elements
Load children Filter patents View analytics View as hierarchy
E04D1/12
Roofing elements shaped as plain tiles or shingles, i.e. with flat outer surface
Load children Filter patents View analytics View as hierarchy
E04D1/16
of ceramics, glass or concrete, with or without reinforcement
Filter patents View analytics View as hierarchy