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Locarno Classification for Industrial Designs

Subclass 23-04

Ventilation ducts 103775

通风管

Chinese 通风管
English Ventilation ducts
Spanish Conductos de ventilación
Number
103775
Category
23-04 Ventilation and air-conditioning equipment
Version
Locarno Classification, 15th edition (LOC 15, in force from 1 Jan 2025); English from the WIPO official text, Chinese from CNIPA's International Classification for Industrial Designs (15th ed.)