US Trademark Classification US16 Paper and stationery 茶包用滤纸（016-3486） Class 16 茶包用滤纸 016-3486 Chinese 茶包用滤纸 English Filter paper for tea bags Term ID 016-3486 Class 16 Type Goods Status Active · added, not since modified (A) Effective date 2024-03-21 Version 12-2024