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jan 1, 1856 - Refrigerator [1856] The first practical vapor compression refrigeration system was built by James Harrison. His original patented version was for compressing ether, alcohol, or ammonia.

Added to timeline:

7 Sep 2017
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152
TECH EXPO
innovations in the past 500 years

Date:

jan 1, 1856
Now
~ 162 years ago

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