Waveguides for high power beam delivery; [ Aerial cables for heavy currents; ] Optical fibers; [ Optic fiber cables; Cables for optical signal transmission; ] Light conducting filaments; Optical cables; [ Electrical bare wires; Power cables; ] Radio relay cables; [ Mineral insulated electric cables; ] Nonlinear optical fibers; [ Material for electricity mains, namely, insulators; Winding electrical wires; Cables for transmitting and receiving cable television signals; Electric cables and fibe...