US Trademark Classification US09 Scientific and electronic apparatus 钠硫电池（009-6731） Class 09 钠硫电池 009-6731 Chinese 钠硫电池 English Sodium-sulfur batteries Term ID 009-6731 Class 09 Type Goods Status Active · added, not since modified (A) Effective date 2023-12-14 Version 12-2023