Cog wheels, wheel cogs 15.7.1

齿轮、轮齿

Chinese 齿轮、轮齿

English Cog wheels, wheel cogs

Spanish Ruedas dentadas, engranajes de ruedas

Code: 15.7.1
Category: 15.7 Wheels, bearings
Version: Vienna Classification, 10th edition (VCL 10, in force from 1 Jan 2026); English from the WIPO official text, Chinese is a J&C reference translation