9 Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking (supervision), life-saving and teaching apparatus and instruments; Apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity; Apparatus for recording, transmission and reproduction of sound or images; Magnetic recording media, sound recording disks; Compact discs, DVDs and other digital recording media; Mechanisms for coin-operated apparatus; Cash registers, calculating machines, data processing equipment, computers; Software; Extinguishers