IC 011. US 013 021 023 031 034. G & S: Plumbing, heating valves and fittings, for instance valves, thermostatic valves as parts of heating installations and tap water faucets; sanitary installations, namely, pipes being parts of sanitary facilities, ozone sanitizers for air and water, urinals, toilets bowls and sinks; water conducting apparatus, namely, water faucet spouts; conduit installations for central heating; respectively piping systems, especially between heating boilers and floors with risers and return pipes as well as floor distribution systems with supply and return pipes, namely, steam heating apparatus for industrial purposes; filters, especially fine filters for tap water; plumbing valves, namely, check valves; shut-off valves for water heaters for domestic, commercial or industrial use

IC 017. US 001 005 012 013 035 050. G & S: Packing, stopping and insulating materials, namely, waterproof packings for construction, insulating water proofing membranes and electrical insulating materials; and plastic flexible pipes for conveying natural gas and for plumbing purposes

IC 019. US 001 012 033 050. G & S: Protective ducts and tubes made of plastic materials for construction purposes, namely, air conditioning ducts, non-electrical circuitry ducts, heating ducts and ventilating ducts, and building materials, namely, plastic pipe supports