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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.
personal protection devices, namely, portable analyzing units which detect the presence and concentration of gases, in particular of combustible gases, flammable gases, volatile organic compounds, toxic gases, oxygen, hydrogen sulfide, carbon monoxide and/or other hazardous gases in air, and provide audible and visual warning