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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.
fiber optics communication system and components therefor consisting of modems, ring managers, interfaces, transceivers, receivers, channel extenders, and optical fiber communications links; fiber optics network components consisting of network access servers, concentrators, interfacility links and intrafacility links, brouters, and bridges; fiber optic remoting hardware and software for airport surveillance radar; and test sets for fiber optics communication systems