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; ironmongery, small items of metal hardware; pipes and tubes of metal; safes; goods of common metal not included in other classes; ores.
metal pipe fittings, namely, service weight fittings, no-hub fittings, cleanouts, pipe extension covers, saddle fittings and kafer insertable fittings; metal plugs; metal closet flanges; metal construction materials, namely, drain grates; metal vent boxes and caps; metal flanges; metal drainage pipes and pipe fittings
11
Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes.
plumbing fittings, namely, backwater valves, bell trap cesspools, strainers for plumbing drains, drains, drum traps, curb boxes
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.
sealing plugs made primarily from rubber; rubber test plugs; non-metal flanges
19
Building materials (non-metallic); non-metallic rigid pipes for building; asphalt, pitch and bitumen; non-metallic transportable buildings; monuments, not of metal.
non-metal pipe fittings, namely, service weight fittings, no-hub fittings, cleanouts, pipe extension covers, saddle fittings, kafer insertable fittings, pipe plugs and closet flanges; nonmetallic construction materials, namely, drain grates; non-metal vent boxes and caps; non-metallic drainage pipes and pipe fittings; plastic conduit for drainage