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Running Model of Very First Otto Langen. 1876 internal combustion (gas) engine
Worlds first Otto Langen Engine
Otto, Langen & Roosen Atmospheric Gas Engine
Otto Langen engine
Otto and Langden atmospheric gas engine model
1867 Otto & Langen Engine
1867 Otto Langen Atmospheric Engine
2nd start attempt full size Otto Langen
Building a model Otto gas engine
video of my 2nd Generation Otto Langen model engine during construction
Otto Engine
3/4 scale Otto Langen Engine at Coolspring 2008
