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2016-04-23T12:32:23+05:30
2016-04-23T12:32:56+05:30
American engineer George Brayton eveloped a two-stroke kerosene engine. then Nikolaus August Otto patented the first four-stroke engine considering  two-stroke kerosene engine to be the  safe and practical oil engine.  then after that Gottlieb Daimler invented the prototype of the modern gasoline engine.
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