1884
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22 April 1884
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Carl Benz also has his two-stroke gas engine with improved flame ignition protected in the USA. A patent with the number 316 868 is issued on 28 April 1885. As early as spring 1884, Benz tests a high-voltage electric ignition system on his two-stroke engines; this enables him to dispense with flame ignition and its complicated control mechanism.
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