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E04C3/00—Structural elongated elements designed for load-supporting
E04C3/30—Columns; Pillars; Struts
E04C3/34—Columns; Pillars; Struts of concrete other stone-like material, with or without permanent form elements, with or without internal or external reinforcement, e.g. metal coverings
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FR608569D1925-12-221925-12-22
concrete columns, reinforced or not, built without formwork using profiled artificial stones
ExpiredFR608569A
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