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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.
[ round grate magnets, square grate magnets, rectangular grate magnets, grate in housing magnets, plate magnets, magnetic cartridges, namely, magnets in cartridge form, ] [ magnetic bracket assemblies comprised primarily of magnets, ] magnets adapted for trapping magnetic materials moving within a liquid stream, such magnets being commonly known in the industry as magnetic liquid traps [, sight glass magnets ]