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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.
air analysis apparatus, namely, air quality sensors, equipment, instruments, monitors, meters and stations; pollutant sensors, namely, airborne pollutant and contaminant sensors, equipment, instruments, monitors, meters and stations; airborne pollutant and contaminant sensors, equipment, instruments, monitors, meters and stations all in the nature of scientific instruments, namely, electronic analyzers for measuring, testing and detecting contaminants and environmental pollutants; particulate and dust monitoring sensors, equipment, instruments, meters and stations all in the nature of scientific instruments, namely, electronic analyzers for measuring, testing and detecting contaminants and environmental pollutants; air analysis apparatus namely, ambient air monitoring sensors, equipment, instruments, meters and stations; gas sensors for measuring gas concentration; gas testing instruments; gas detectors for detecting the presence of gas including ozone gases; computer software for obtaining, interpreting and reporting measurements and readings from sensors, equipment, instruments, monitors, meters and stations in relation to air quality, airborne pollutants and contaminants, ambient air, particulate and dust levels and gas and ozone gas levels