9
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.
instruments-namely, rate of flow meters; rate of flow controllers; liquid level gauges, pressure gauges and differential pressure gauges; system for dispensing chemicals or their solutions by weight or volume, comprising rotating auger-like screws, travelling belts, scales, storage and dilution tanks, and pumps; signalling and supervisory system for the automatic control of water treatment systems, comprising switches, indicating lights, electrical relays, time switches, programmable controllers, minicomputers and panels and boxes for housing them
11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
aerators for water, waste water or sewage; filter systems to remove suspended materials, oil or other contaminants from water, and parts thereof; solids contact reactors for the clarification, color removal and/or softening of water; ion exchangers and their regeneration systems; reverse osmosis systems; solids contact reactors for the clarification, softening, phosphate reduction, metallic ion reduction, or combinations thereof of water, waste water or sewage; screens used in water purification; clarifier systems to remove suspended materials by sedimentation or flotation or combination of the two, and parts thereof; digester systems for wastewater or sewage sludges; activated sludge treatment systems; grit removers employing controlled settling to separate grit from the organics carried by wastewater or sewage