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E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
E02B7/20—Movable barrages; Lock or dry-dock gates
FR974228D1941-06-141941-06-14Portes d'écluses, formes de radoub et autres bassins, allégées et fractionnées à l'aide de ponts-poutres mobiles
ExpiredFR974228A
(fr)