On August 9, 1898, Rudolf Diesel was granted patent for Diesel engine – This Day in Patent History

On August 9, 1898, Rudolf Diesel was granted patent #608,845 for an “internal combustion engine” which was named after him “the Diesel engine”. 

There was a patent dispute between Rudolf Diesel and Herbert Akroyd Stuart. But Rudolf’s engine was far more efficient than the one patented by Stuart. 

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