US Trademark Classification US19 Building materials 非金属屋面板（019-1850） Class 19 非金属屋面板 019-1850 Chinese 非金属屋面板 English Non-metallic roof panels Term ID 019-1850 Class 19 Type Goods Status Active · added, not since modified (A) Effective date 2024-09-19 Version 12-2024