Skip to main content

US Trademark Classification

Drilling muds for use in oil well drilling 001-129

用于油井钻探的钻井泥浆

Chinese 用于油井钻探的钻井泥浆
English Drilling muds for use in oil well drilling
Spanish Lodos de perforación para uso en la perforación de pozos petrolíferos
Term ID
001-129
Class
01
Type
Goods
Status
Active · added, not since modified (A)
Effective date
1991-04-02
Version
07-1997