Brushes for vacuum cleaners; Cleaning appliances utilizing steam; Dust exhausting installations for cleaning purposes; Dust filters and bags for vacuum cleaners; Electric vacuum cleaners; Filtering machines for chemical processing; Filters for cleaning cooling air, for engines; Machines and apparatus for carpet shampooing, electric; Particulate air filters for exhaust systems for internal combustion engines; Pigs for cleaning pipes; Suction nozzles for vacuum cleaners; Vacuum cleaner bags; Va...