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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.
stroboscopic apparatus for producing high-intensity, short-duration light flashes for use other than (1) as lighted indicators for advising as to the status of a device or condition at a remote location, (2) as illuminated electrical switches, or (3) as a component of electric control panels-namely, flash lamps, lenses and reflectors, flash heads, doors and lens holders, cooling apparatus, focus controls, air filters, cable connectors for such apparatus, control consoles comprising power supplies and controls for such apparatus, light pulse generators, motion picture and video recording equipment used in conjunction with such apparatus, and apparatus for the optical control of such light flashes including exposure meters, "barn doors" and filter, gel and scrim holders