Yvonne Chrétien, FR534216A
Machine Produisant des Briquettes de Sciure de Bois (ou d’Autres Matières) à la Scierie Même, par un Procédé d’Agglomération sans Agglomérant.
Image credit: Chrétien, Y. (1921)
On April 18, 1921, Yvonne Chrétien of Paris obtained a patent for a mobile machine that turned raw sawdust into fuel briquettes using heat and pressure. Installed next to a sawmill, it heated, prepared, and compressed the sawdust on the spot, converting a waste material into dense, efficient fuel.
Date of Application: 18 April 1921
Date of Issuance: 22 March 1922
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Francesca Chiaradia
PhD Candidate in Economics
My research interests include innovation, law, and information economics.