Lucienne Gouny, FR496218A
Caisse Pliante Système à Parallélogramme.
Image credit: Gouny, L. (1919)
On October 30, 1919, Madame Lucienne Gouny of Paris, France, patented a collapsible box using a parallelogram folding system. Her design hinged all sides so that two opposite sides remain parallel while the others fold without overlap, allowing the box to compact to one-quarter of its full volume when closed.
Date of Application: 25 February 1919
Date of Issuance: 30 October 1919
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