US Trademark Classification US21 Household and kitchen utensils 隔热瓶（021-955） Class 21 隔热瓶 021-955 Chinese 隔热瓶 English Insulated flasks Spanish Frascos aislantes Term ID 021-955 Class 21 Type Goods Status Active · added, not since modified (A) Effective date 1991-04-02 Version 07-1997