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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.
electrical lighting unit for the trucking and transportation industry consisting of light sources, namely light emitting diodes, incandescent lamps, fluorescent lamps, neon lamps; and electronic circuitry for detecting light source failures, communicating light source failures to a vehicle operator, regulating light output, multiplexing signals to illuminate alternate light sources in the event of a light source failure, and detecting and communicating anti-lock braking unit failures, and the like