US Trademark Classification US28 Toys, games and sporting goods 围棋棋子（028-980） Class 28 围棋棋子 028-980 Chinese 围棋棋子 English Go stones Spanish ¡Vaya piedras! Term ID 028-980 Class 28 Type Goods Status Active · added, not since modified (A) Effective date 2004-07-20 Version 08-2002