Accumulator boxes; Accumulators, electric; Acoustic conduits; Aerials; Anode batteries; Antennas; Apparatus and instruments for conveying, distributing, transforming, storing, regulating or controlling electric current; Armatures for use in electrical apparatus; Batteries, electric; Battery boxes; Battery chargers; Cabinets for loudspeakers; Calculating machines, data-processing equipment and computers; Chargers for electric batteries; Commutators; Connections, electric; Converters, electric;...