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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.
mobile emitter locating apparatus used to receive and analyze rf signals within aviation frequency bands; portable intercept and direction finding apparatus, comprised of a df receiver and processor, df antenna, monitor, power adapter, cables, battery charger, and dual channel tape recorder, and battery packs; df digital bearing processor; radio direction finder for mobile, airborne, base-station or shipboard operation; surveillance monitor, and df receiver and processor; vhf and uhf fixed site df antenna; broad frequency fixed site df antenna; hand-held df antenna; mobile df antenna for land-mobile or aircraft operations; and vehicle beacon comprising transmitter, motion sensor and battery circuit boards