US Trademark Classification US16 Paper and stationery 教学用三维模型（016-3318） Class 16 教学用三维模型 016-3318 Chinese 教学用三维模型 English Three-dimensional models for educational purposes Term ID 016-3318 Class 16 Type Goods Status Active · added, not since modified (A) Effective date 2021-07-22 Version 11-2021