6, 17, 19, 20,
(Metal goods) 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; iron mongery, small items of metal hardware; pipes and tubes of metal; safes; goods of common metal not included in other classes; ores.Class 17:
(Rubber goods) 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.Class 19:
(Nonmetallic building materials) Building materials (nonmetallic); nonmetallic rigid pipes for building; asphalt, pitch and bitumen; nonmetallic transportable buildings; monuments, not of metal.Class 20:
(Furniture and articles not otherwise classified) Furniture, mirrors, picture frames; goods (not included in other classes) 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.Class 31:
(Natural agricultural products) Agricultural, horticultural and forestry products and grains not included in other classes; living animals; fresh fruits and vegetables; seeds, natural plants and flowers; foodstuffs for animals, malt.Class 40:
(Treatment of materials) Treatment of materials.