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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.
microcomputer systems for the operation of railroad signaling units, comprised of input signal converters, clock pulse generators, comparators, voltage regulators, memories, checking pulses, checking amplifiers, signals and switches, and computer programs, recorded on tapes, disks or cards