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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.
audio and video signal connectors, video signal connectors, speaker wire, video switches, electrical and electromagnetic signal transmitting, amplifying, receiving and converting devices, namely, connectors and control devices for use with music devices, sound mixing boards, and sound recording equipment