Electric connections; electric contacts; electric connectors; electric cables; electric wires; connectors for electronic circuits; video screens; micrometers; photographic cameras; electric calculators; traffic-light apparatus, namely, signaling devices; electrical distribution boxes; electric switches; electric junction boxes; electric batteries; ammeters; voltmeters; fibre-optic cables; junction sleeves for electric cables; headphones; telephone sets; cellular telephones; electric connections in the nature of plugs, sockets, and electric contacts; covers for electric outlets; printed circuits; electric conductors; light emitting diodes (LEDs)