EU Trademark Classification EU11 Lighting, heating and air conditioning 抑制火势蔓延用风门（28772） Class 11 抑制火势蔓延用风门 28772 Chinese 抑制火势蔓延用风门 English Draught dampers for inhibiting the spread of fire Site ref. 28772 Class 11 Included in Harmonised Database (HDB)