Antennas; transmitters of electronic signals; intercommunication apparatus, namely, telephones, radios, pagers; navigational instruments, namely, electric navigational instruments, navigational instruments for vehicles; masts for wireless aerials; video telephones; navigation apparatus for vehicles in the nature of on-board computers; satellite navigational apparatus, namely, global positioning system; network communication equipment, namely, computer routers, modems, communication hubs; elec...