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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.
antennas and digital signal meters comprised of sensors, computers, micro-processors, software, and firmware, all for evaluating signal strength, signal quality, frequency, wavelength, level, bit error rate, reverse bit error rate, modulated bit error rate, pre- and post- bit error rate, carrier to noise, pre-forward error correction, post forward error correction, and channel status information of radio and television broadcasting reception signals; software for use in the evaluation of signal strength of digital signal meters