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Author: WikiMatrix
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English[en]
According to Hong-Sen Yan, director of the National Science and Technology Museum, early Chinese padlocks were mainly "key-operated locks with splitting springs, and partially keyless letter combination locks".
Spanish[es]
De acuerdo con Hong-Sen Yan, director del Museo Nacional de Ciencia y Tecnología , los primeros candados chinos eran principalmente " clave -cerraduras, operado con muelles de división y parcialmente sin llave cerraduras de combinación de letras".