9 Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking or supervision, life-saving and teaching apparatus and instruments, namely, cameras, scales, apparatus for recording sound, images or data, and surveying instruments; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity, namely, electric switches, indicator lights, electronic connectors, inverters, electricity limiters, and controllers; apparatus for recording, transmission or reproduction of sound or images; blank magnetic recording media; blank sound recording disks; blank compact disks and DVDs; other digital recording media, namely, pre-recorded video cassettes, digital flash drives, digital video discs, digital versatile discs, downloadable audio and video recordings, and DVDs, and high definition digital discs featuring information on terrestrial and maritime communications, telecommunications networks, encryption technology, privacy and cybersecurity; mechanisms for coin-operated apparatus; cash registers; calculating machines; data processing equipment; computers; software for database management, encryption, and securing electronic data in the fields of terrestrial and maritime communications, telecommunications networks, encryption, privacy and cybersecurity; fire extinguishers