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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.
telecommunications apparatus, instruments and equipment, namely computer interface modules for connection to telephone lines, and parts thereof; counting and data processing apparatus, namely, signal storing memory apparatus; measuring and test units for determining the functional status of telephone switches and communication of malfuntion signals; communication and control systems for use in connection with telephone and telephone lines within a home or business premises, namely, a control module and remote modules under control of the control module which are plugged into telephone line connector sockets, and which provide for analysis of usage of telephone lines; telecommunications multiplexers and controllers; computer data telecommunications systems and peripherals, namely, telecomputers, electrical interfaces for coupling telecomputers to telephone circuits and interfaces for coupling telecomputers to video displays and printers; general and special purpose computers, computer peripherals, microprocessors, and computer programs for analyzing usage of telecommunications systems, and systems comprising the same and parts therefor; reference guides and manuals sold as a unit with the above