The Bureau of Arts and Manufactures of the Ministry of the Interior gave Appert an ex gratia payment of 12,000 francs on condition that he make his process public
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The Bureau of Arts and Manufactures of the Ministry of the Interior gave Appert an ex gratia payment of 12,000 francs on condition that he make his process public
Text from Wikipedia, available under CC BY-SA 4.0.
Captured 2026-08-16 from Wikipedia. The archived copy is preserved so this citation survives link rot.