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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.
electro-magnetic anti-shoplifting system for use in retail stores comprising magnetically encoded adhesive tags to be applied to merchandise, dispensers for applying the tags to merchandise sold therewith, an electronic desensitizer for use in desensitizing the tags and computer panel detectors for placement at the exit from the store to detect non-desensitized tags leaving the store