Air-conditioning apparatus; Air-conditioning installations; Air-conditioning, air cooling and ventilation apparatus and instruments; Air cooling apparatus; Air filtering installations; Air purifying apparatus and machines; Dehumidifiers; Drying apparatus for use in heating, ventilation systems, air conditioning systems and refrigeration systems; Electric air dryers; Electric pocket warmers for warming hands; Gas scrubbing apparatus; Hot air blowers; Humidifiers; Laundry drying machines; Radia...