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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.
measuring and scientific appliances-namely, particle accelerators, [ electron diffraction ] and x-ray equipment; gas chromatographs, [ interferometers, magnetometers, ] spectrometers, [ spectropolarimeters, ] spectrophotometers, [ gradiometers ] and fluxmeters; [ calorimeters, ] electrometers, [ electron microscopes, seisomograph and tiltmeter geophysical instruments; ] vacuum discharge and ionization gauges; digital indicators, plotters and graphic recorders, leak detectors, [ hypersonic wind tunnel throats ] and [ components, digital integrators, ] computers, [ alphanumeric readout displays and gas analyzers, time and frequency standards ]