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; Pipes and tubes of metal; Safes; Goods of common metal included in class 6; Ores; Sluice gates, Disc valves, Control valves, in particular plunger valves and hollow jet discharge valves, butterfly valves and Non-return valves, House connection valves, venting and air-release valves, suction strainers and Flaps, Gate valve extensions, pipe connectors and extension pieces, manhole covers, Manhole covers, Pipe-break valves and shut-off valves, non-return valves, diaphragm valves, Tapping cocks, valve sleeves and tapping sleeves, tapping slide valves, float valves, Pressure reducing valves, Inlet strainers, Ball valves, Gas valves, tanker valves and tanker shut-off valves, signs (all the aforesaid goods being of metal and not being parts of machines)
11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes; Water supply, wastewater and clarifying installations, and fittings, small fittings, castings and pressed parts therefor; Hydraulic diaphragm valves, tapping cocks, valve sleeves and tapping sleeves, tapping slide valves, Ball valves, Gas valves, Main gas valves, ball-type water reservoirs; Underground and above ground hydrants
20
Furniture, mirrors, picture frames; Goods (included in class 20) of wood, cork, reed, cane, wicker, horn, bone, ivory, whalebone, shell, amber, mother-of-pearl, meerschaum and substitutes for all these materials, or of plastics; Gate valves, disc valves, control fittings, in particular annular piston valves and conical jet valves, gate valves and check valves, house connection fittings, ventilating and air valves, suction pipes and dirt pans, valve brackets, pipe connectors and expansion pieces, surface boxes, manhole covers, pipe burst and shut-off fittings, non-return valves, diaphragm valves, tapping stop valves, valve and tapping sleeves, tapping slide valves, equilibrium float valves, pressure reducing valves, inlet strainers, ball valves, gas valves, tanker valves and tanker shut-off valves, signs (all the aforesaid goods not of metal and not being machine parts)