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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.
telecommunication equipment; namely, transmission systems comprising; microwave radio transmitters, receivers and repeaters, video fiber optic transmitters, receivers and repeaters; frequency division multiplex units; coaxial cable carrier terminals and line repeaters; subscriber carrier frequency multiplexers; data modems, multiplexers and line repeaters; pulse code modulation channel banks and line repeaters; supervisory control systems for remote site status reporting, telemetering and telecontrol functions; echo suppressors and voice frequency and signalling units; central office systems comprising; telephone switching exchanges; private automatic branch exchanges; and station equipment comprising; telephone sets cord connectors, coin controller telephone sets, intercoms, and telephone answering machines; and telephone line testing instruments