EU Trademark Classification EU09 Scientific and electronic apparatus 光学玻璃滤光片（23382） Class 09 光学玻璃滤光片 23382 Chinese 光学玻璃滤光片 English Optical glass filters Site ref. 23382 Class 09 Included in Harmonised Database (HDB), TM5 ID List, WIPO Madrid Goods and Services (MGS)