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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.
electrochemical apparatus, namely, electrolysers and components thereof, namely, electrodes, for the on-site generation of active halogen compounds for use in automatic and manual water treatment and purification and corrosion control systems for the prevention of biofouling of sea water and fresh water cooling systems, for the sterilization of potable water systems, for base and precious metal mining, and for chemical manufacture