US Trademark Classification US21 Household and kitchen utensils 清洁梳子（021-421） Class 21 清洁梳子 021-421 Chinese 清洁梳子 English Cleaning combs Spanish Peines de limpieza Term ID 021-421 Class 21 Type Goods Status Active · added, not since modified (A) Effective date 1991-04-02 Version 07-1997