US Trademark Classification US37 Construction and repair 供暖装置修理（037-2376） Class 37 供暖装置修理 037-2376 Chinese 供暖装置修理 English Repair of heating apparatus Term ID 037-2376 Class 37 Type Services Status Active · added, not since modified (A) Effective date 2021-08-12 Version 11-2021