cleaning, scouring and abrasive preparations; chemical cleaning preparations; liquid cleaner; cleaning chemicals for use in dishwashers, glass washers and ware washers; detergents for dishwashers, glass washers and ware washers; rinse aid for dishwashers, glass washers and ware washers.

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; Vacuum cleaner attachments for disseminating perfumes and disinfectants; Shafts couplings; Agitators; Feeding apparatus for engine boilers; Carburetter feeders; Alternators; Food preparation machines, electromechanical; Lifting apparatus; Gas welding machines; Washing machines; Lifting apparatus; Handling apparatus for loading and unloading; Crank shafts; Axles for machines; Vacuum cleaners; Dynamo brushes; Carbon brushes; Grease rings (parts of machines); Piston rings; Adhesive bands for pulleys; Belts for conveyors; Stands for machines; Reels [parts of machines]; Gear boxes other than for land vehicles; Grease boxes (parts of machines); Sparking plugs for internal combustion engines; Glow plugs for Diesel engines; Brushes being parts of machines; Air brushes (machines) for applying paints; Brushes, electrically operated (parts of machines); Grinding machines; Kitchen grinders, electric; Ball-bearings; Control cables for machines, engines or motors; Transmission chains other than for land vehicles; Elevator chains (parts of machines); Bending machines; Scissors, electric; Chisels for machines; Scissors, electric; Valves (Clack -) [parts of machines]; Mud catchers and collectors (machines); Controls (Hydraulic -) for machines, motors and engines; Controls (Pneumatic -) for machines, motors and engines; Compressors (machines); Compressors for refrigerators; Steelworks (Converters for -); Dynamo belts; Elevator belts; Fan belts for motors and engines; Belts for machines; Belts for conveyors; Anti-friction bearings for machines; Cutters (machines); Jacks (machines); Cylinders for motors and engines; Reels, mechanical, for flexible hoses; Reeling apparatus, mechanical; Glaziers' diamonds (parts of machines); Igniting devices for internal combustion engines; Anti-pollution devices for motors and engines; Control mechanisms for machines, engines or motors; Door openers and closers (hydraulic -) [parts of machines]; Pneumatic devices for opening or closing doors (parts of machines); Adhesive tape dispensing machines; Dividing machines; Fuel economisers for motors and engines; Elevators [lifts]; Gear transmissions, other than for land vehicles; Reels, mechanical, for flexible hoses; Labellers [machines]; Gas welding machines; Blades (parts of machines); Filters being parts of machines or engines; Drilling machines; Milling machines; Generators of electricity; Lubricators (parts of machines); Emergency power generators; Notchers (machine tools); Guides for machines; Dust exhausting installations for cleaning purposes; Saw blades (parts of machines); Blades (parts of machines); Sizing machines; Sharpening machines; Agricultural machines; Sharpening machines; Compressed air machines; Woodworking machines; Machines for metal processing; Paring machines; Sealing machines for industrial purposes; Engraving machines; Printing machines for use on sheet metal; Crushing machines; Cleaning (Machines and apparatus for -), electric; Electric welding apparatus; Bellows [parts of machines]; Suction machines for industrial purposes; Machines for metal processing; Threading machines; Filtering machines; Heel-making machines; Foundry machines; Machine tools; Painting machines; Stone-working machines; Grindstones (parts of machines); Chucks (parts of machines); Industrial handling machines; Cranks (parts of machines); Hammers (parts of machines); Electric hammers; Pneumatic hammers; Electric hammers; Tilt hammers; Sharpening wheels (parts of machines); Looms (machines); Paring machines; Aeronautical engines; Aeronautical engines; Compressed air engines; Electric motors (except for land vehicles); Motors, other than for land vehicles; Electric can openers; Tools (parts of machines); Hand-held tools, other than hand-operated; Pulleys; Self-oiling bearings; Anti-friction bearings for machines; Anti-friction bearings for machines; Bearings for transmission shafts; Drills (Electric hand -); Glue guns, electric; Air brushes for applying colour; Compressed air guns for the extrusion of mastics; Punching machines; Punches for punching machines; Pumps (machines); Compressed air pumps; Lubricating pumps; Pumps (parts of machines, engines or motors); Air pumps (garage installation); Vacuum pumps (machines); Centrifugal pumps; Pumps for heating installations; Drill chucks (parts of machines); Blade holders (parts of machines); Holding devices for machine tools; Pulleys (parts of machines); Press machines for industrial purposes; Sewage pulverizers; Planing machines; Trueing machines; Pressure regulating valves parts of machines; Speed governors for machines, engines and motors; Riveting machines; Taps (parts of machines, engines or motors); Machine wheels; Road rollers; Ball-bearings; Bearings; Vacuum cleaner bags; Saws (machines); Power saws; Blowing machines for exhaustion of dust, etc; Forge bellows; Blowing machines for the compression, sucking and carrying of grain; Forge bellows; Slide rests (parts of machines); Tables for machines; Carriage aprons; Sidewalks [moving pavements]; Die-cutting and tapping machines; Lawnmowers [machines]; Drilling rigs, floating or non-floating; Lathes (machine tools); Potters' wheels; Belt conveyors; Belt conveyors; Windlasses; Vacuum cleaner hoses; Gates (parts of machines); Fans for motors and engines; Suction cups for milking machines; Jacks (machines); Vibrators (machines) for industrial use.

Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments; Apparatus and instruments for the supply, distribution, transformation, accumulation, regulation or control of electric current; 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; Electric accumulators; Remote-control apparatus; Weighing apparatus and instruments; Breathing apparatus, except for artificial respiration; Distributing boxes; Optical goods; Automatic indicators of low pressure in vehicle tires; Fire alarms; Batteries for lighting; Batteries for pocket lamps; Ear plugs; Signalling buoys; Compasses; Magnetic identity bracelets; Callipers; Protective helmets; Protective helmets for use in sports; Workmen's protective face-shields; Spectacle frames; Clinometers; Containers for microscope slides; Protective suits for aviators; Comparators; Compasses [measuring instruments]; Thread counters; Pedometers; Revolution counters; Meters; Protection devices for personal use against accidents; Life-saving devices; Life saving apparatus and equipment; Reflecting discs, for wear, for the prevention of traffic accidents; Fire escapes; Projection screens; Workmen's protective face-shields; Luminous signs; Mechanical signs; Eyewear cases; Containers for contact lenses; Traffic signalling lamps; Nets for protection against accidents; Plumb lines; Identification threads for electric wires; Filters for respiratory masks; Identification sheaths for electric wires; Asbestos gloves for protection against accidents; Knee-pads for workers; Clothing for protection against fire; Safety restraints (other than for vehicle seats and sports equipment); Water level indicators; Inclinometers; Temperature indicators; Vacuum gauges; Instruments containing eyepieces; Measuring instruments; Levelling instruments; Inverters [electricity]; Levelling staffs [surveying instruments]; Gauges; Screw-tapping gauges; Binoculars; Optical lanterns, telescopes; Magnifying glasses [optics]; Spectacles (optics); Anti-glare glasses; Sunglasses; Sports spectacles; Sighting telescopes for firearms; Mannequins for resuscitation exercises [teaching apparatus]; Divers' masks; Protective masks; Solderers' helmets; Respiratory masks; Respirators, other than for artificial respiration; Rules (measuring instruments); Measures; Micrometers; Microscopes; Mirrors (optics); Mirrors for inspecting work; Furniture especially made for laboratories; Spectacles frames; Pince-nez mountings; Levels [instruments for determining the horizontal]; Spirit levels; Surveyors' levels; Eye-pieces; Slide calipers; Electric batteries; Laboratory trays; Plumb bobs; Pedometers; Teeth protectors; Distribution consoles (electricity); Protractors [measuring instruments]; Refractometers; Rulers [measuring instruments]; Slide-rules; Carpenters' rules; Respirators with air filters; Diving suits; Signalling whistles; Signals, luminous or mechanical; Fog signals, non-explosive; Fog signals, non-explosive; Tachometers; Speedometers; Walkie-talkies; Earplugs for divers; Ear plugs; Mouse mats; Telemeters; Thermometers, not for medical purposes; Vehicle breakdown warning triangles; Marking gauges [joinery]; Light regulators (dimmers) (electric); Verniers; Optical glass; Correcting lenses [optics]; Contact lenses; Spectacle lenses; Clothing for protection against accidents, radiation and fire; Asbestos clothing for protection against fire; Garments for protection against fire; Clothing especially made for laboratories; Micrometer screws for optical instruments; Viscosimeters; Anti-glare visors.

Materials for uppers of boots, shoes, sandals and of slippers; linings for uppers of boots, shoes, sandals and of slippers; all consisting principally of plastics or of rubber; all included in Class 17.

Woven and non-woven textile materials for lining the uppers of boots, shoes, sandals and of slippers; all included in Class 24.

Electric lighting fittings and parts therefor; all included in Class 11.

Common metals and their alloys; Materials of metal for railway tracks; Non-electric cables and wires of common metal; Ironmongery, small items of metal hardware; Ores; Steel, unwrought or semi-wrought; Cast steel; Fittings of metal for windows; Railway switches; Metal doorknockers; Letters and numerals of common metal, except type; Handcuffs; Aluminium; Anchors; Rings of common metal for keys; Barbed wire; Metal door frames; Traps for wild animals; Reinforcing materials of metal for machine belts; Barrel hoops of metal; Nails; Sheaf binders of metal; Beacons of metal, non-luminous; Vice benches of metal; Bands of metal for tying-up purposes; Baths (Bird -) [structures of metal]; Bars for metal railings; Crash barriers of metal for roads; Stops of metal; Plugs of metal; Chests of metal for food; Glucinium [beryllium]; Anvils; Anvils; Anvils [portable]; Armor-plating; Paving blocks of metal; Channel buoys [mooring] of metal; Bronze; Wall plugs of metal; Statuettes of common metal; Hooks of metal for clothes rails; Cabanas of metal; Paint spray booths of metal; Telephone booths of metal; Knife handles of metal; Tool handles of metal; Scythe handles of metal; Broom handles of metal; Wire rope; Cables of metal, non-electric; Telpher cables; Padlocks; Cadmium; Floating docks of metal, for mooring boats; Letter boxes of metal; Window frames of metal; Window frames of metal; Hooks for slate [metal hardware]; Non-electric metal door bells; Bells; Chimney cowls of metal; Winding spools of metal, non-mechanical, for flexible hoses; Weather vanes of metal; Screw rings; Pegs of metal; Fences of metal; Cermets; Chimneys of metal; Steel sheets; Steel sheets; Numberplates of metal; Sheets and plates of metal; Keys; Cotter pins of metal; Lead, unwrought or semi-wrought; Load handling (Braces of metal for -); Load handling (Braces of metal for -); Cobalt, raw; Chimney cowls of metal; Copper, unwrought or semi-wrought; Ropes of metal; Cornices of metal; Safety chains of metal; Chains of metal; Cattle chains; Armor-plating; Horseshoe nails; Pot hooks of metal; Chromium; Stair treads [steps] of metal; Wind-driven bird-repelling devices made of metal; Door openers, non-electric; Towel dispensers, fixed, of metal; Hinges of metal; Strap-hinges of metal; Tinplate packings; Badges of metal for vehicles; Staircases of metal; Mobile boarding stairs (Metal -) for passengers; Metal ladders; Props of metal; Balls of steel; Jets of metal; Spurs; Mooring bollards of metal; Tent pegs of metal; Tin; Statuettes of common metal; Tombstone stelae of metal; Stretchers for metal bands [tension links]; Roller blinds of steel; Outdoor blinds of metal; Metal step ladders; Door springs, non-electric; Spring locks; Non-electric locks of metal; Locks of metal for vehicles; Sealing caps of metal for bottles; Closures of metal for containers; Closures of metal; Box fasteners of metal; Locks of metal for bags; Bolts (Door -) of metal; Latch bars of metal; Ironwork for windows; Ironwork for doors; Metal hardware; Fittings of metal for building; Chrome iron; Steel, unwrought or semi-wrought; Cast iron, unwrought or semi-wrought; Iron (Molybdenum -); Silicon iron; Ferrotitanium; Tungsten iron; Window casement bolts; Bolts (Door -) of metal; Statuettes of common metal; Steel wire; Steel wire; Aluminium wire; Copper wire, not insulated; Wire of common metal alloys, except fuse wire; Wire; Thread of metal for tying-up purposes; Soldering wire of metal; Buckles of common metal [hardware]; Flanges of metal [collars]; Tinfoil; Tin; Sheets of aluminium; Steel strip; Foils of metal for wrapping and packaging; Steel strip; Loading gauge rods, of metal, for railway waggons; Galena [ore]; Hooks of metal for clothes rails; Pot hooks of metal; Jalousies of metal; Germanium; Grids of metal; Machine belt fasteners of metal; Crampons of metal [cramps]; Wheel clamps [boots]; Grids of metal; Fittings of metal for beds; Fittings of metal for furniture; Metal door trim; Fittings of metal for coffins; Building or furniture fittings of nickel-silver; Hafnium [celtium]; Indium; Windows of metal; Animals (Metal cages for wild -); Tombs of metal; Wainscoting of metal; Door scrapers; Metal gravestones; Copper, unwrought or semi-wrought; Silver-plated tin alloys; Nickel-silver; Steel alloys; Common metals and their alloys; Brazing alloys; Filings of metal; Limonite; Load handling (Braces of metal for -); Ingots of common metal; Bolts (Lock -); Lintels of metal; Latches of metal; Magnesium; Manganese; Railway materials; Materials of metal for funicular railway permanent ways; Common metals, unwrought or semi-wrought; Metals in powder form; Pyrophoric metals; Anti-friction metal; White metal; Nickel-silver; Chrome ores; Iron ores; Ores; Springs [metal hardware]; Mouldings of metal for cornices; Molybdenum; Bronzes for tombstones; Tombs (Monuments of metal for -); Monuments of metal; Insect screens of metal; Niobium; Nickel; House numbers of metal, non-luminous; Bronzes [works of art]; Works of art of common metal; Door panels of metal; Signalling panels, non-luminous and non-mechanical, of metal; Loading pallets of metal; Handling pallets of metal; Handling pallets of metal; Palings of metal; Binding screws of metal for cables; Bolts of metal; Pins [hardware]; Brads; Floor tiles of metal; Pitons of metal [mountaineering equipment]; Ice nails [climbing irons]; Memorial plaques, of metal; Tie plates; Identity plates of metal; Metal gravestones; Turntables [railways]; Furnace fireguards of metal; Shims; Pigsties of metal; Window pulleys; Ferrules of metal for walking sticks; Ferrules of metal for handles; Screw nuts of metal; Shutters of metal; Metal doors; Gates of metal; Steel masts; Masts of metal; Poles of metal for power lines; Telegraph posts of metal; Diving boards of metal; Tree protectors of metal; Identification bracelets of metal; Door handles of metal; Knobs of metal; Guard rails of metal; Rocket launching platforms of metal; Rivets of metal; Bed casters of metal; Furniture casters of metal; Runners of metal for sliding doors; Pulleys of metal, other than for machines; Bolts of metal; Street gutters of metal; Lead seals; Silos of metal; Signs, non-luminous and non-mechanical, of metal; Signs, non-luminous and non-mechanical, of metal, for roads; Bells for animals; Gold solder; Silver solder; Sills of metal; Advertisement columns of metal; Cask stands of metal; Trays of metal; Signboards of metal; Manhole covers of metal; Sealing caps of metal for bottles; Screw tops of metal for bottles; Sealing caps of metal; Tantalum [metal]; Wire gauze; Furnace fireguards of metal; Flashing of metal, for building; Roofing tiles of metal; Vice claws of metal; Iron bands (Stretchers for -) [tension links]; Belt stretchers of metal; Wire stretchers [tension links]; Rope thimbles of metal; Titanium; Tombac; Taps for casks of metal; Turnstiles; Railway sleepers of metal; Window stops of metal; Gate stops of metal; Hoppers of metal, non-mechanical; Firedogs [andirons]; Tubbing of metal; Tombs of metal; Tungsten; Vanadium; Poles of metal; Metal brazing rods; Soldering wire of metal; Metal brazing rods; Stringers [parts of staircases] of metal; Ferrules of metal; Zinc; Zirconium.

Building construction; Repair; Installation services; Knife sharpening; Pumps for drainage purposes (Rental of -); Rental of bulldozers; Rental of excavators; Rental of cranes [construction equipment]; Rental of construction equipment; Cleaning machines (Rental of -); Rental of road sweeping machines; Masonry; Office machines and equipment installation, maintenance and repair; Asphalting; Vehicle maintenance and repair; Washing; Paper hanging; Masonry; Umbrella repair; Parasol repair; Furniture maintenance; Vehicle maintenance and repair; Airplane maintenance and repair; Strong-room maintenance and repair; Strong-room maintenance and repair; Leather care, cleaning and repair; Leather care, cleaning and repair; Building construction; Factory construction; Pier breakwater building; Harbour construction; Building of stands for fairs and shops; Warehouse construction and repair; Shipbuilding; Underwater construction; Construction consultation; Demolition of buildings; Disinfecting; Rat exterminating; Vermin exterminating, other than for agriculture; Service stations (Vehicle -) [refuelling and maintenance]; Re-tinning; Upholstering; Mining extraction; Construction consultation; Repair information; Machinery installation, maintenance and repair; Installation of kitchens; Installation of doors and windows; Pipeline construction and maintenance; Air conditioning apparatus installation and repair; Freezing equipment installation and repair; Electric appliance installation and repair; Burglar alarm installation and repair; Fire alarm installation and repair; Irrigation devices installation and repair; Elevator installation and repair; Furnace installation and repair; Telephone installation and repair; Computer hardware (Installation, maintenance and repair of -); Cloth laundry; Motor vehicle wash; Vehicle wash; Laundering; Dry cleaning; Chimney sweeping; Buildings (Cleaning of -) [interior]; Buildings (Cleaning of -) [exterior surface]; Diaper cleaning; Street cleaning; Vehicle cleaning; Cleaning of clothing; Window cleaning; Sanding; Vehicle lubrication [greasing]; Swimming-pool maintenance; Vehicle maintenance; Scaffolding; Pressing of clothing; Pressing of clothing; Road paving; Drilling of wells; Drilling of deep oil or gas-wells; Signs (Painting or repair of -); Pumicing; Vehicle polishing; Riveting; Re-inking and refilling of toner cartridges; Tyre repair; Clock and watch repair; Rebuilding machines that have been worn or partially destroyed; Rebuilding engines that have been worn or partially destroyed; Renovation of clothing; Repair of shoes; Photographic apparatus repair; Pump repair; Upholstery repair; Repair of security locks; Film projector repair and maintenance; Underwater repair; Restoration of musical instruments; Furniture restoration; Restoration of works of art; Carpentry services; Building sealing; Quarrying services; Building insulating; Artificial snow-making services; Renovation of clothing; Renovation of clothing; Building construction supervision; Interference suppression in electrical apparatus; Roofing services; Varnishing; Cabinet making [repair]; Painting, interior and exterior; Plastering; Rustproofing; Anti-rust treatment for vehicles; Tyres (Vulcanization of -) [repair].

Installation of pipework systems; pipeline construction; construction of pipelines for gas; construction of pipelines for hydrogen; installation of gas supply and distribution apparatus; installation of hydrogen supply and distribution apparatus; pipeline laying; servicing of pipelines; maintenance and repair of pipeline systems; construction of gas storage installations; construction of hydrogen storage installations; installation of gas pipelines; installation of hydrogen pipelines; construction work relating to gas supply pipes; construction work relating to hydrogen supply pipes; construction project management services; pipeline installation and repair; construction services; installation, maintenance and repair of gas meters; installation, maintenance and repair of hydrogen meters; construction, maintenance and repair of gas installations; construction, maintenance and repair of hydrogen installations; connection of supplies of gas; connection of supplies of hydrogen; re-purposing pipelines for hydrogen; pipeline maintenance; pipeline laying; information, consultancy and advisory services in relation to all the aforesaid services. None of the aforesaid services relate to the construction, installation, or maintenance of aluminium-based architectural systems.

Distribution of gas; distribution of hydrogen; transportation of gas; transportation of hydrogen; transportation of gas through pipelines; transportation of hydrogen through pipelines; transportation of fuels; gas storage services; hydrogen storage services; pipeline transport of gases; pipeline transport of hydrogen; distribution of hydrogen by pipeline; distribution of gas by pipeline; storage of gas; storage of hydrogen; arranging for the distribution of gas; arranging for of the transportation of gas; transport by pipeline; information, consultancy and advisory services in relation to all the aforesaid services. None of the aforesaid services relate to the construction, installation, or maintenance of aluminium-based architectural systems.

Coppersmithing goods of metal and for use in metal working, namely blenders, reactors, separation units, exchangers, vats, Tanks, Armoured plating,Sheaths, Ferrules of metal, Containers,Casings, Coffers,Hoppers, Frameworks of metal, Tubes, Pipes,Pipes for fluids, Plates, plaques, Valves, Junctions, of metals, for pipes, Taps of metal, Silos of metal; Pipework goods of stainless steel, namely: cocks, pipe junctions, elbows, hoses, valves, clack valves, couplers, junction boxes.

Elements and components of fluid circuits, namely: sensors, Couplers,Pneumatic or hydraulic logic components, control boxes, Flow meters, Transducers, Pumps,Piloted valves, controlled valves.

Installation of pipework systems; pipeline construction; construction of pipelines for gas; construction of pipelines for hydrogen; installation of gas supply and distribution apparatus; installation of hydrogen supply and distribution apparatus; pipeline laying; servicing of pipelines; maintenance and repair of pipeline systems; construction of gas storage installations; construction of hydrogen storage installations; installation of gas pipelines; installation of hydrogen pipelines; construction work relating to gas supply pipes; construction work relating to hydrogen supply pipes; construction project management services; pipeline installation and repair; construction services; installation, maintenance and repair of gas meters; installation, maintenance and repair of hydrogen meters; construction, maintenance and repair of gas installations; construction, maintenance and repair of hydrogen installations; connection of supplies of gas; connection of supplies of hydrogen; re-purposing pipelines for hydrogen; pipeline maintenance; pipeline laying; information, consultancy and advisory services in relation to all the aforesaid services. None of the aforesaid services relate to the construction, installation, or maintenance of aluminium-based architectural systems.

Distribution of gas; distribution of hydrogen; transportation of gas; transportation of hydrogen; transportation of gas through pipelines; transportation of hydrogen through pipelines; transportation of fuels; gas storage services; hydrogen storage services; pipeline transport of gases; pipeline transport of hydrogen; distribution of hydrogen by pipeline; distribution of gas by pipeline; storage of gas; storage of hydrogen; arranging for the distribution of gas; arranging for of the transportation of gas; transport by pipeline; information, consultancy and advisory services in relation to all the aforesaid services. None of the aforesaid services relate to the construction, installation, or maintenance of aluminium-based architectural systems.

Installation of pipework systems; pipeline construction; construction of pipelines for gas; construction of pipelines for hydrogen; installation of gas supply and distribution apparatus; installation of hydrogen supply and distribution apparatus; pipeline laying; servicing of pipelines; maintenance and repair of pipeline systems; construction of gas storage installations; construction of hydrogen storage installations; installation of gas pipelines; installation of hydrogen pipelines; construction work relating to gas supply pipes; construction work relating to hydrogen supply pipes; construction project management services; pipeline installation and repair; construction services; installation, maintenance and repair of gas meters; installation, maintenance and repair of hydrogen meters; construction, maintenance and repair of gas installations; construction, maintenance and repair of hydrogen installations; connection of supplies of gas; connection of supplies of hydrogen; re-purposing pipelines for hydrogen; pipeline maintenance; pipeline laying; information, consultancy and advisory services in relation to all the aforesaid services. None of the aforesaid services relate to the construction, installation, or maintenance of aluminium-based architectural systems.

Distribution of gas; distribution of hydrogen; transportation of gas; transportation of hydrogen; transportation of gas through pipelines; transportation of hydrogen through pipelines; transportation of fuels; gas storage services; hydrogen storage services; pipeline transport of gases; pipeline transport of hydrogen; distribution of hydrogen by pipeline; distribution of gas by pipeline; storage of gas; storage of hydrogen; arranging for the distribution of gas; arranging for of the transportation of gas; transport by pipeline; information, consultancy and advisory services in relation to all the aforesaid services. None of the aforesaid services relate to the construction, installation, or maintenance of aluminium-based architectural systems.