9 Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking (supervision), life-saving and teaching apparatus and instruments, namely, cameras, printers, scanners; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electric conductors, electric switches, electric transformers, electric accumulators; apparatus for recording, transmission or reproduction of sound or images; blank magnetic data carriers, pre-recorded discs, namely, compact discs, DVDs, USB flash drives and other digital recording media in the nature of downloadable audio and video recordings featuring video and audio files; mechanisms for coin-operated apparatus; cash registers; calculating machines and data processing equipment; computers; computer software for use in database management, use as a spreadsheet, word processing, operating digital recording devices, functioning of interactive television services, namely, voice on demand services and electronic program guides, functioning of set-top-boxes and functioning of server equipment; fire-extinguishing apparatus