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Christian Huygens designs a combustion engine.
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Francois Isaac de RIvaz of Switzerland invented an internal combustion engine that used a mixture of hydrogen and oxygen for fuel.
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Samuel Brown adapted an old Newcomen steam engine to burn gas,
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Jean JosephÉtienne Lenoir invented a double-acting, electric spark-ignition internal combustion engine fueled by coal gas
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Alphonse Beau de Rochas patented a four-stroke engine
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Siegfried Marcus built a one-cylinder engine with a crude carburetor
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Eugen Langen and Nikolaus August Otto improved on Lenoir's and de Rochas' designs and invented a more efficient gas engine.
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George Brayton developed an unsuccessful two-stroke kerosene engine
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Nikolaus August Otto invented and later patented a successful four-stroke engine
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The first successful two-stroke engine was invented by Sir Dougald Clerk
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Edouard Delamare-Debouteville, built a single-cylinder four-stroke engine that ran on stove gas.
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Gottlieb Daimler invented what is often recognized as the prototype of the modern gas engine
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Karl Benz received the first patent for a gas-fueled car.
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Daimler built an improved four-stroke engine
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Wilhelm Maybach built the first four-cylinder, four-stroke engine