US Trademark Classification US11 Lighting, heating and air conditioning 家用空气净化器（011-612） Class 11 家用空气净化器 011-612 Chinese 家用空气净化器 English Air purifiers for household purposes Term ID 011-612 Class 11 Type Goods Status Active · modified since entry (M) Effective date 2023-02-16 Version 12-2023