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jan 1, 1781 - Steam Engine [1781] James Watt patented a steam engine that produced rotary motion with the power of 7500W. It was the first steam engine to make use of steam at a pressure just above atmospheric to drive the the piston.

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TECH EXPO
innovations in the past 500 years

Date:

jan 1, 1781
Now
~ 237 years ago

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