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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.
electrical power quality improvement and protection devices, namely, waveform correction devices; surge protectors; transient voltage surge suppressors; electronic devices, namely, high frequency noise filters, ground filters, custom tuned frequency attenuation filters, audio-video-ethernet surge protectors; power supplies for various topologies; power strips with wave form correction and surge protection; electronic circuits, namely, electrodeless fluorescent ballast driving circuits with added filtration and protection