US Trademark Classification US16 Paper and stationery 蓝图夹（016-1780） Class 16 蓝图夹 016-1780 Chinese 蓝图夹 English Blueprint holder Spanish Porta planos Term ID 016-1780 Class 16 Type Goods Status Active · added, not since modified (A) Effective date 2008-10-10 Version 09-2007