Aerials; amplifiers; antennas; electromagnetic coils; holders for electric coils; electric coils; electric installations for the remote control of industrial operations; electro-dynamic apparatus for the remote control of signals; GPS tracking devices; apparatus for transmission of communication; magnetic wires; masts for wireless aerials; video monitors; remote control telemetering machines and apparatus; electronic apparatus for the remote control of industrial operations; electro-dynamic apparatus for the remote control of signals; telecommunications transmitters; transmitters of electronic signals; transponders; walkie-talkies