Inside Out Library · ExploreSelf-glider with lift propellers, French Patent 463968 of 1913 (1913)Societe Anonyme l'Aera · leaf 1N° 463.968Patents · French patents · Aircraft · Flying machines · GlidersInternet Archive · Public Domain Mark 1.0. Free to use for anything.More pictures from Self-glider with lift propellers, French Patent 463968 of 1913More like this
