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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.
electric audio and video equipment, namely, amplifiers, audio mixers, audio processors, equalizers, feedback controllers, loudspeakers, loudspeaker boxes, microphones, mixing consoles, and apparatus for recording, transmitting, manipulating, and reproducing audio and video; electronic circuitry used as a component in apparatus for recording, transmitting, manipulating, and reproducing audio and video; public address systems comprising one or more of the following components, namely, loudspeakers, loudspeaker boxes, amplifiers, microphones, and mixers; computer hardware; software and digital algorithms to control, enhance, and transmit audio and video and to operate electric audio and video equipment