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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.
camera systems, namely, cameras for inspecting conduits such as sewer conduits, and parts and accessories therefor, namely, auxiliary push rods to allow inspection over longer distances, camera centering guides that are placed over a camera head to keep it centered in conduits, camera sleeves that are placed over a camera head to protect it from shock in use, roller carriages for transportation of the cameras, and locators and transmitters used with the cameras