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E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
E04C5/01—Reinforcing elements of metal, e.g. with non-structural coatings
E04C5/06—Reinforcing elements of metal, e.g. with non-structural coatings of high bending resistance, i.e. of essentially three-dimensional extent, e.g. lattice girders
E04C5/0604—Prismatic or cylindrical reinforcement cages composed of longitudinal bars and open or closed stirrup rods
E04C5/0618—Closed cages with spiral- or coil-shaped stirrup rod
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FR417928D1910-02-281910-04-15Nouveau système d'armature métallique pour poteaux de lignes aériennes
ExpiredFR417928A
(fr)