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Publication of BE678877ApublicationCriticalpatent/BE678877A/xx
E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
E04C2/30—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by the shape or structure
E04C2/42—Gratings; Grid-like panels
E—FIXED CONSTRUCTIONS
E04—BUILDING
E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
E04F11/00—Stairways, ramps, or like structures; Balustrades; Handrails
E04F11/02—Stairways; Layouts thereof
E04F11/104—Treads
E04F11/16—Surfaces thereof; Protecting means for edges or corners thereof
E04F11/163—Protecting means for edges or corners
E04F11/166—Protecting means for edges or corners with means for fixing a separate edging strip