Antennas; Batteries, electric; Battery chargers for use with telephones; Cabinets for loudspeakers; Chargers for electric batteries; Commutators; Discharge tubes, electric, other than for lighting; Electric buzzers; Electric discharge tubes, other than for lighting; Electric wires and cables; Electronic indicator boards; Electronic indicator panels; Electronic regulating and control devices for the operation of light emitting diodes; Flashing safety lights; Level indicators; Light emitting di...