US Trademark Classification US01 Chemicals 金属氧化物（001-889） Class 01 金属氧化物 001-889 Chinese 金属氧化物 English Metallic oxides Spanish óxidos metálicos Term ID 001-889 Class 01 Type Goods Status Active · added, not since modified (A) Effective date 2004-07-20 Version 08-2002