US Trademark Classification US09 Scientific and electronic apparatus 恒湿器（009-7315） Class 09 Hygrostats 009-7315 恒湿器 Chinese 恒湿器 English Hygrostats Spanish Higrostatos Term ID 009-7315 Class 09 Type Goods Status Active · added, not since modified (A) Effective date 2025-03-13 Version 12-2025