Eugen Langen (1833–1895) was a German entrepreneur, engineer and inventor, involved in the development of the petrol engine and the Wuppertal monorail. In 1857 he worked in his father's sugar factory, JJ Langen & Söhne, after an extensive technical training at the Polytechnic institute in Karlsruhe.
Read more about Eugen Langen: Otto and Langen, Deutz, Railway Equipment, See Also