metal ducts for electric cable and metal supports for cable, namely, support brackets (based on French registrtion no. 1, 565, 312)

metallic ducts, metal ducts for cable, electric conductors and wire and parts therefor, metal ladders, namely, cable ladders for supporting cable rungs and cable trays attached thereto for electric conductors, cables and wires; metal ducts, sheaths, casings and skirt-boards and parts thereof; metal supports of and for cable ducts, electric conductor ducts and wire ducts, namely, brackets; metal pieces for connecting and assembling ducts for cable, electric conductors and wire, and for connect...