US Trademark Classification US28 Toys, games and sporting goods 鸟哨（028-517） Class 28 鸟哨 028-517 Chinese 鸟哨 English Bird calls Spanish Cantos de pájaros Term ID 028-517 Class 28 Type Goods Status Active · added, not since modified (A) Effective date 1991-04-02 Version 10-2015