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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.
apparatus and systems for controlling and running compressors and generators comprised of an electronic control module, namely, a rectifier module for regulating engine speed and air inlet with the aim of optimizing fuel consumption, automatic regulating valves, an inlet throttle, namely, an automatic inlet control valve for reciprocating air compressors, and software for electronically measuring pressure and engine speed