EU Trademark Classification EU09 Scientific and electronic apparatus 屏幕用光学滤光片（23366） Class 09 屏幕用光学滤光片 23366 Chinese 屏幕用光学滤光片 English Optical filters for screens Site ref. 23366 Class 09 Included in Harmonised Database (HDB), TM5 ID List, WIPO Madrid Goods and Services (MGS)