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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.
scuba diving equipment, namely, scuba masks, scuba weight belts, submersible pressure gauges, and underwater compasses; buoyancy control systems for scuba diving consisting of buoyancy compensators, wings, and harnesses; scuba diving gas management systems consisting of first stage regulators, second stage regulators, and high pressure and low pressure hoses for scuba diving regulators, and accessories in the nature of replacement covers, mouthpieces, and repair kits for the regulators; scuba diving suits featuring dry suits, hoods, boots, gloves, mittens, gaiters; scuba diving suit undergarments, namely, short and long jumpsuits, vests, neck warmers, socks, underwater urinators, and dry suit inflation systems consisting of regulator and low pressure hose; surface marker buoys and lift bags to deploy to the surface of the water during scuba diving activity for buoyancy, signaling, and lifting; compressed gas management systems for scuba diving consisting of gas cylinders, tank valves, and manifolds; downloadable electronic books, student manuals, instructor manuals, booklets, checklists, and testing materials all in the field of scuba diving and diving equipment repair and use; handles, harnesses, and accessories in the nature of clips, retractable lanyards, mount brackets, specifically adapted for mounting underwater light systems for scuba diving to a diver