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17
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.
goods made of glass-fiber reinforced plastics, namely, pipes in the nature of flexible air exhaust pipes for venting, flexible plumbing pipes of plastic for waste water, flexible conduit pipes, and cast parts, namely, non-metal flanges, flexible by-pass pipes not of metal, non-metal flexible elbow pipes, flexible t-pipes not of metal
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19
Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; monuments, not of metal.
goods made of glass-fiber reinforced plastics, namely, pipes in the nature of rigid air exhaust pipes for venting, rigid waste water pipes, rigid conduit pipes and formwork, namely, sheathing board
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20
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
goods made of glass-fiber reinforced plastics, namely, cast parts of all kinds, namely, valves of plastic being other than machine parts, non-metal storage tanks and containers not of metal for commercial use, casks not made of metal