One quadrilateral A 26.4.5

一个四边形

Chinese 一个四边形

English One quadrilateral

Spanish Un cuadrilátero

Code: A 26.4.5
Category: 26.4 Quadrilaterals
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

Auxiliary section

与主要章节 26.4.1-26.4.4、26.4.7-26.4.12、26.4.26 相关的辅助章节Auxiliary Sections Associated with Principal Sections 26.4.1-26.4.4, 26.4.7-26.4.12, 26.4.26