"Century Motors Corp" in Michigan made a four-cylinder, horizontally-opposed, air-cooled engine.

-Based on Dusevoir ideas like the multi-piece crankshaft able to use roller bearings on the main journals, (similar to system that we see in the German Bücker Hirth engines).

-The Century was build by William Stout between 1941 and 1942. It gave 75 hp and it was a two-stroke engine.