US Trademark Classification US01 Chemicals 工业用异丁醇（001-2255） Class 01 工业用异丁醇 001-2255 Chinese 工业用异丁醇 English Isobutanol for industrial purposes Term ID 001-2255 Class 01 Type Goods Status Active · added, not since modified (A) Effective date 2021-01-21 Version 11-2021