air purifiers; air purifiers for household use; air purifying machines; air purifying devices; portable air purifiers; air purifying instruments; air purifying apparatus; air purifying apparatus and machines; air purifying units for commercial use; air purifying units for industrial use; air dehumidifiers; instruments for purifying air; air cleaning devices; air sterilisers; air sterilizers; air treatment equipment; air cleaning instruments; air sterilisers for household use