US Trademark Classification US19 Building materials 预制非金属隔音间（019-1667） Class 19 预制非金属隔音间 019-1667 Chinese 预制非金属隔音间 English Prefabricated soundproof booths, not of metal Term ID 019-1667 Class 19 Type Goods Status Active · added, not since modified (A) Effective date 2024-06-20 Version 12-2024