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; mechanisms for coin-operated apparatus; cash registers, calculating machines, data processing equipment and computers; fire-extinguishing apparatus; electrical power control apparatus, electrical test apparatus, electrical switching apparatus, electrical remote control apparatus; electrical condensers; crucibles; scientific apparatus and instruments wholly or partially of refractory materials, for metallurgy, metal working or for heat treatment in chemical, glass-melting, enamelling, dental, electric lamp making processes; measuring and assaying (for verification) apparatus and instruments, experimental furnaces, and parts included in this class of all the aforesaid goods; parts included in this class made wholly or principally of alumina ceramic materials, for scientific, electrical, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus; apparatus and instruments, all for measuring and recording electrical power; thermocouples, thermoconverters, electrical transformers; wire wound electrical components; geiger counter tubes, electron tubes, vacuum tubes, photomultiplier tubes, radiation detecting apparatus and instruments; neutron detectors; detecting chambers for gamma rays; radioactive sensitized magnetic foils, none being for medical or curative purposes; electro-optical apparatus; silicon photodiodes; fission chambers, ionisation gauges; counting apparatus; gas analyzing apparatus; silicon photo-detectors; semi-conductors; spectrometers; light emitting diode detectors; photomultipliers; apparatus and instruments, all included in this class for the control of nuclear reactors; computers; micro-processors; magnetic discs and tapes; recorded computer programmes; printed circuits on transparent bases; measuring, weighing and checking (supervision) apparatus and instruments; safe load indicating apparatus and instruments; testing (other than invivo testing) apparatus and instruments; alarm apparatus and instruments none for vehicles; electrical power units comprising transformers and rectifiers; apparatus included in this class for displaying information; parts and fittings included in this class for all the aforesaid goods; resistors, variable resistors, and potentiometers, all being electric; batteries, accumulators, fuel cells, electrolysis apparatus, and mobile generators; component sub-assemblies for batteries, accumulators, fuel cells; flow field plates, separators, and electrodes all being parts of batteries, accumulators, fuel cells, electrolysis apparatus, or mobile generators; graphite support tubes for microfiltration apparatus; silicon carbide coated graphite parts for use in the manufacture of semiconductors; batteries, accumulators, fuel cells, electrolysers and component parts thereof; commutators; current collectors; rotary current collectors; current collectors for electrical vehicles; rotary power and/or data transfer apparatus; electrical connectors; terminal blocks; vibration monitoring devices; commutator measuring devices; pressure measurement devices; protective helmets; body armour; ballistic protection panels for body armour.

Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; parts and fittings, made from refractory materials for nuclear reactors, power stations, for furnaces and for the like high temperature utilising apparatus; apparatus and appliances incorporating parts which glow in use and all for heating, lighting, cooking or drying, and the glowing parts for such apparatus and appliances; burners, metal melting and holding furnaces and parts of all the aforesaid goods; radiants being parts of gaseous or liquid fuel operated heating apparatus; furnaces and ovens, none for experimental use; generators not for land vehicles, namely, gas generators and component sub-assembly parts therefor; hydrogen generators and component sub-assembly parts therefor; flow field plates, separators, and electrodes all being parts of gas and hydrogen generators; mobile hydrogen generators and component subassembly parts therefor; mobile gas generators and component sub-assembly parts therefor; gas radiance heaters; electric heaters; heat treating, sintering, and brazing furnaces; autoclaves; gallium arsenate producing furnaces; heat treating furnaces; sintering and brazing furnaces; carbonizing furnaces; graphitizing furnaces; induction or resistance tube furnaces; pyrolytic depositing furnaces; CVD furnaces; CVR furnaces; quartz/fused silica melting/sintering furnaces; high temperature furnaces; boilers; burners; tubes, shaped linings, cupola syphon blocks, slag-hole blocks, taphole blocks, launders, hot metal pouring chutes, stream dividers, kiln saggars, skimmer blocks, slag notch cooler linings, slag or iron lips, slag notch surrounds, blast furnace troughs, blast furnace sub-hearths, blast furnace trough linings, charging door surrounds, rotar segments, spouts, spout covers, spout burner blocks, spout inserts, orifice rings, flue blocks, burner blocks, stirrer sleeves, damper blocks, channel blocks, arch anchor blocks, arches, arch blocks, stirrers, jamb walls, back and breast walls, shadow walls, port crowns, port openings, overcoat blocks, pyrometer blocks, muffles, retorts and saggars, all for use with the aforesaid furnaces, ovens, boilers and burners; kiln furniture (element supports) of ceramic material; shaped linings and muffles, and pottery kiln furniture; refractory articles for use in the lining or construction of apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes, including such articles in brick or block form; tops and washers all for water taps; parts of apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; electrical heating elements; carbon composite lining supports for nuclear fusion apparatus; crucible liners of ceramic; pouring cups for molten metals; filters for molten metals; funnels for molten metals; hydrogen generators.

Rubber, gutta-percha, gum, asbestos, mica and goods made from these materials and not included in other classes; plastics in extruded form for use in manufacture; packing, stopping and insulating materials; flexible pipes not of metal; electrical insulating materials; materials made wholly or principally of insulating materials in the form of sheets (non-textile), blocks, rods, tubes, and shaped sections, all for use in manufacture; materials included in this class for packing, for sealing and for jointing (not included in other classes); gaskets; heat insulating materials in the form of bulk fibre, loose spun fibre, blankets, cloth, pads, strips, tapes, tubes, blocks, sheets, and of boards or composite form; graphite felts and cloths for insulation; shaped sections of thermal insulation for use in manufacture.

Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; monuments, not of metal; refractory articles and refractory materials all in plastic, granular, powder, brick or block form; refractory articles and refractory materials for use in lining furnaces and tanks and for use in building construction; goods made wholly or partially of refractory materials, including clay-bonded graphite, carbon-bonded graphite, silicon carbide, or mixtures of the aforesaid materials; ceramic articles for use in casting materials; ceramic molds for use in the foundry industry; cores and shaped pieces, all made from ceramics and all being for use in manufacture; cores and shaped pieces, all being disposable items of ceramics or wax for use in the casting of metals; goods made of refractory materials, including clay-bonded graphite, carbon-bonded graphite, silicon carbide, or mixtures of the aforesaid materials, for use in the treatment, handling or casting of molten metals or to contain or protect articles during heat treatment.

Unworked or semi-worked glass (except glass used in building); glassware, porcelain and earthenware not included in other classes; ceramic materials in the form of blocks, rods or sheets, all for use in manufacture or for industrial use.