Patent classifications
E
FIXED CONSTRUCTIONS
Load children
E04
BUILDING
Load children
E04D
ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
Load children
13/00
Special arrangements or devices in connection with roof coverings; Protection against birds;; Roof drainage; ; Sky-lights;
Load children Filter patents View analytics View as hierarchy
E04D13/03
Sky-lights; Domes; Ventilating sky-lights
Load children Filter patents View analytics View as hierarchy
E04D13/033
provided with means for controlling the light-transmission or the heat-reflection, (e.g. shields, reflectors, cleaning devices)
Filter patents View analytics View as hierarchy