accounting machines, accumulators (electric), amplifiers, battery chargers, boiler control instruments, calculators, capacitors, capacity measures, cell switches (electricity), chemistry apparatus and instruments, circuit breakers, circuit closures, collectors (electric), commutators, computer keyboards, computer memories, computers, conductors (electric), connections for electric lines, connectors (electricity), control panels (electricity), contacts (electric), counters, couplings (electric), processing apparatus, distribution boxes (electricity), electric loss indicators, electrolyzers, electromagnetic coils, electrostatic copying apparatus and machines, fluorescent screens, fuses, heliographic apparatus, integrated circuits, intercommunication apparatus, magnetic disks, materials for electricity mains, measuring devices (electric), meters, oscillographs, phototelegraphy apparatus, photovoltaic cells, plates for batteries, printed circuits, recorded computer programs, reducers (electricity), remote control apparatus and installations, resistances (electric), rheostats, silicon slices, solar batteries, telecommunication transmitters, telecopiers, telegraphs, telephone apparatus, telephone receivers, telephone transmitters, telephone wires, telerupters, teletypewriters, terminals (electricity), transformers (electricity) transmitters of electronic signals, word processors