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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.
integrated control systems for parabolic trough solar power plants, namely, electronic control units for orienting parabolic trough solar collectors optimally towards the sun, and associated software, namely, software for performing a virtual sun-tracking algorithm and a high-precision absolute inclinometer providing input to said algorithm software, a central processor and system monitoring station for such power plants composed of system monitoring hardware and software, and inter-connecting hardware and software, electronic transmitters and receivers, loop isolators and ethernet repeaters, and associated software for monitoring and communicating solar collector orientation and status