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6
Common metals and their alloys; metal building materials; transportable buildings of metal; materials of metal for railway tracks; non-electric cables and wires of common metal; ironmongery, small items of metal hardware; pipes and tubes of metal; safes; goods of common metal not included in other classes; ores.
[ metal receptacles and support hopper for industrial use; platforms and foot-bridges of metal; metal bridges and supporting structures for bulk material conveyors; and constructions of steel-namely, frameworks and frames for buildings; receptacles and reservoirs ]
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7
Machines and machine tools; motors and engines (except for land vehicles); machine coupling and transmission components (except for land vehicles); agricultural implements other than hand-operated; incubators for eggs.
machines for use in the mining industry-namely, crushers, millers, sifters, classifiers, sorters and parts thereof; conveyors with oscillatory movements and belt conveyors; centrifugal and rotary pumps, machine bellows and blower machines and parts therefor, mixers; shaker casting machines and presses-namely, those for manufacturing of electrodes; machine gears; belt conveyors, pneumatic conveyors and oscillatory conveyors; machines for the manufacture of electrodes, cathodes and anodes for use in the alumina industry; machines for the production of coke from coal
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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.
weighing instruments, electrical measuring and regulating instruments
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11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
electronic separators and filters for electronically separating dust from gases and parts therefor; industrial furnaces; preheaters and furnaces for burning chalk and cookers for gypsum, as well as for the alumina and aluminum industry and parts therefor; exhausters and parts therefor; ventilators; industrial units for drying and cooling materials; installations for thermal, chemical and biological destruction of wastes