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E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
E04B7/00—Roofs; Roof construction with regard to insulation
E04B7/20—Roofs consisting of self-supporting slabs, e.g. able to be loaded
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FR520050A1919-02-191920-07-09Perfectionnements apportés à la construction des toits de batiments au moyen de carreaux ou plaques en béton armé
ExpiredFR520050A
(fr)