Polish engineer working in Berlin, Alfred Marceli Joachimczyk, at Deutsche Flugmaschinenbau-Gesselschaft built an experimental triplane with tandem wings but the design was apparently a complete failure.
Joachimczyk 1911 Airplane
Polish engineer working in Berlin, Alfred Marceli Joachimczyk, at Deutsche Flugmaschinenbau-Gesselschaft built an experimental triplane with tandem wings but the design was apparently a complete failure.
All Aero 