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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.
telephone intercommunication systems including switchboards and instruments; telephone sets including dialing, switching, ringing (signaling), cord connectors (plugs and jacks) and coin controlled apparatus; telephone switching networks using manual, electromechanical, and electronic switching units; telecommunication networks comprising means for transmitting, receiving, and switching signals derived from sound; telephone wiring and cable; and semiconducting devices comprising transistors, diodes, electronic switches and integrated circuits; outside plant products for telecommunications industry-namely, excessive, voltage protectors, cable terminations and testing devices especially for telephones (such as connectors, terminals, splicing devices, tapes, compounds, and building cable terminals); and terminal blocks (such as terminal block tools and cable forming supports); inductive and capacitive locators, test sets (such as exploratory coils), voltage and current testing devices, electrical exploratory line tools, capacitive and inductor pegs, and cable pair identifying devices; and telephone cable gas pressurizing apparatus