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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
E04C2/34—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 composed of two or more spaced sheet-like parts
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FR842467D1938-08-221938-08-22Procédé pour la fabrication d'éléments de construction cellulaire creux par collage de leurs parties constitutives
ExpiredFR842467A
(fr)
Procédé de fabrication d'éléments tubulaires creux, en ciment armé, pouvant s'assembler, par emboîtement, pour la constitution de potaux, par exemple