EU Trademark Classification EU12 Vehicles Shrouded tail rotors for helicopters Class 12 Shrouded tail rotors for helicopters 32722 直升机用涵道尾桨 Chinese 直升机用涵道尾桨 English Shrouded tail rotors for helicopters Site ref. 32722 Class 12 Included in Harmonised Database (HDB), TM5 ID List