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Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, 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 or reproduction of sound or images; magnetic data carriers, recording discs; automatic vending machines and mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus.
computerized sound systems comprised of sound mixers, digital audio processors, digital attenuators, digital audio recorders, microcomputers, automatic integrity testing equipment, software, video information displays, computer network hubs, switches, and routers, and instructional manuals sold as a unit