CPC Main Group F24F 6/00 Air-humidification 8 direct subcodes Child Classifications Navigate with arrow keys, Enter to open F24F 2006/001 F24F 2006/003 F24F 2006/005 F24F 2006/006 F24F 2006/008 F24F 6/02 by evaporation of water in the air F24F 6/12 by forming water dispersions in the air F24F 6/18 by injection of steam into the air