EU Trademark Classification EU42 Scientific and technological services 油层勘测的编制（71605） Class 42 Oil-beds (Preparing surveys of -) 71605 油层勘测的编制 Chinese 油层勘测的编制 English Oil-beds (Preparing surveys of -) Site ref. 71605 Class 42 Included in Harmonised Database (HDB), WIPO Madrid Goods and Services (MGS)