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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.
audio amplifiers for aircraft, audio equalizers for aircraft, audio pre-amplifiers for aircraft, headphones for aircraft, audio and video source selectors for aircraft, audio speakers for aircraft, and speaker enclosures for aircraft; hand held infrared control systems for remote controlling aircraft audio and video systems; electrical display panels for aircraft audio and video systems; video and audio signal distribution equipment for aircraft; and, electrical switch panels for aircraft audio and visual systems