Filters for industrial installations; ionization apparatus for the treatment of air or water; air treatment equipment; ionization apparatus for the treatment of air or water; ionization apparatus for the treatment of air; accelerated ion devices (for treating the air); humidifiers; air dryers; air sterilizers; dehumidifiers; air purifiers; electric air purifiers; ionization apparatus for the treatment of air or water; air cleaning apparatus; air cleaning apparatus; air cleaning apparatus; air circulation apparatus; filters for air purifiers; air sterilising apparatus; household air cleaners; industrial air purifiers; air purifying apparatus; air cleaning apparatus; air purifying apparatus; air sterilizers for household purposes; air filters for industrial installations; air filters for industrial use; air filters for household use; germicidal lamps for purifying air; installations for air extraction; ionising brushes for the treatment of air; equipment for heating, ventilation, air conditioning and air purification (for rooms); sterilizers; air sterilizers; sterilizers for industrial use; sterilizers (not for medical purposes); water sterilizers; water ionizers; water treatment and air treatment equipment; air sanitizers, water sanitizers; water sterilizers; ion generators for water and air treatment