Air purifiers; filters for air purifiers; air filters for air cleaners; air purifying apparatus; electric air deodorizing apparatus; air washers; air sterilizers for household purposes; air cleaning apparatus for household purposes; air purifying units for household purposes; household air cleaners; portable air cleaners for household use; electric air deodorizing unit for household purposes; apparatus for ventilating and air conditioning; electric air circulators; apparatus for ventilating, ...