US Trademark Classification US28 Toys, games and sporting goods 悠悠球（028-327） Class 28 悠悠球 028-327 Chinese 悠悠球 English Yo-yos Spanish Yo-yos Term ID 028-327 Class 28 Type Goods Status Active · added, not since modified (A) Effective date 1991-04-02 Version 07-1997