cleaning robots; brushes for vacuum cleaners; vacuum cleaner hoses; dust bags for vacuum cleaners; dust filters for vacuum cleaners; electric fan units for vacuum cleaners; nozzles for vacuum cleaners; robotic vacuum cleaners; central vacuum cleaning installations; cleaning appliances utilizing steam; dust filters being parts of machines or engines; dust filters for cleaning cooling air, for engines; air cleaners [parts of motors]; filter cartridges for industrial filtering machines for drinking water; cartridges for filtering machines; dry cleaning machines; dish washing machines; floor washing machines; washing and drying machines; swimming pool cleaning machines