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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.
protective and controlling systems for power lines-namely, voltage sensing capacitor controls, current sensing capacitor controls, power factor sensing capacitor controls, overcurrent controls, monitoring instruments for voltage current and power factor; measuring, indicating and controlling instruments-namely, control pyrometers, electronic control meters, electronic set-point controls, multipoint controllers, digital meters, warning flag mechanisms, multi-tester meters, panel meters, meter relays and digital control systems