US Trademark Classification US16 Paper and stationery 圆珠笔油墨（016-2954） Class 16 圆珠笔油墨 016-2954 Chinese 圆珠笔油墨 English Ball pen ink Term ID 016-2954 Class 16 Type Goods Status Active · added, not since modified (A) Effective date 2021-06-17 Version 11-2021