License, verbatimUS-PD
The New York Public Library states no known U.S. copyright for this item. Pinax admits it as US-PD only because the work predates 1900, making public domain near-certain worldwide; status outside the U.S. is not asserted and reuse elsewhere is the user's responsibility. Credit: From The New York Public Library.
Reproduction de la dernière page du brevet n° 117.574 pris en France le 16 février 1876, par Penaud et Gauchot, pour «Un aéro-plane ou appareil aérien volant».. 1876 (from title). The New York Public Library.