US Trademark Classification US06 Metal goods 金属烟囱（006-59） Class 06 金属烟囱 006-59 Chinese 金属烟囱 English Metal chimneys Spanish Chimeneas metálicas Term ID 006-59 Class 06 Type Goods Status Active · added, not since modified (A) Effective date 1991-04-02 Version 07-1997