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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.
audio electronic equipment, comprising parametric equalizers, tuneable electronic crossovers, feedback suppressors, stereo mixer preamplifiers, and multiple channel recording consoles; electronic and computer circuits, circuit boards, hardware and software for the control, processing and distribution of multiple digital and analog audio and data signals both locally and over extended area digital computer networks