9 Photocopiers; facsimile machines; blueprints apparatus; teleprinters; unfilled ink cartridges for photocopy machines or computer printers; integrated circuit modules; photovoltaic cells; electronic and optical communication instruments and components, namely, optical transmitters, optical receivers, optical data links, optical transceivers, cable television transmitters, digital transmitters, communication link testers for testing communication links; optical glasses; electrical conductors; electric switches; electrical fuses; electric meters