US Trademark Classification US19 Building materials 手工艺用木块（019-1382） Class 19 手工艺用木块 019-1382 Chinese 手工艺用木块 English Wood blocks for arts and crafts Term ID 019-1382 Class 19 Type Goods Status Active · added, not since modified (A) Effective date 2021-02-18 Version 11-2021