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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 communications apparatus, including antennas, feeders, transformers, attenuators, detectors, equalizers, couplers, electrical filters, multiplexers, mixers, oscillators, discriminators, amplifiers, multipliers, frequency synthesizers, power combiners, power dividers, phase shifters, low noise amplifiers, power amplifiers, low noise down converters, analog-to-digital converters, digital-to analog converters, encoders, decoders, rf modems, microwave transmitters, microwave receivers, video/audio modulators, catv line amplifiers, catv network monitors; optical modems, optical multiplexers, optical transmitters and optical receivers