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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 equipment, namely, phonographs, [ transcription players, ] cassette recorders, cassette players, cd players, combination cd player/cassette recorder/radios and powered speakers; teaching apparatus, namely, magnetic audio card readers with speakers [ and microphones, ] magnetic instructional cards, [ console mounted monitor and controls for multiple teaching programs and related printed instructional materials sold as a unit; ] public address systems comprising amplifiers, speakers, turntables, power supply, input jacks, microphones, portable megaphones; headphones, and carrying cases therefor; [ portable lecterns with self-powered speakers and microphone; visual presentation equipment, namely, slide sync recorders, dissolve units, cables, computer interfaces and dual projector stands therefor; and electronic dot array message displays ]