Inside Out Library · ExploreSmikalla - Automatic Airplane, French Patent 398803 of 1909 (1909)August Smikalla · leaf 0N° 398.803 M. Smikalla PI. uniquePatents · French patents · Aircraft · Flying machines · HelicoptersInternet Archive · Public Domain Mark 1.0. Free to use for anything.More pictures from Smikalla - Automatic Airplane, French Patent 398803 of 1909More like this