What key recognition did the Otto–Langen engine receive at the Paris Expo in 1867?

Answer

Gold medal

The Otto–Langen atmospheric gas-powered engine was unveiled at the Paris Expo of 1867 where it received the gold medal designated as the “most efficient drive machine”.

What key recognition did the Otto–Langen engine receive at the Paris Expo in 1867?

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Running Model of Very First Otto Langen. 1876 internal combustion ...

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