EU Trademark Classification EU06 Metal goods Louvre vents (Metal -) for buildings Class 06 Louvre vents (Metal -) for buildings 12204 建筑物用金属百叶通风口 Chinese 建筑物用金属百叶通风口 English Louvre vents (Metal -) for buildings Site ref. 12204 Class 06 Included in Harmonised Database (HDB)