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the first Steam Locomotive is invented by George Stephens
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the first refrigerator is invented by Jacob Perkins
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the reinforced concrete is develops by joseph monier
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Revolving machine gun invented by Richard J. Gatling when is
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the first Microwave is invented by Percy Spencer by accident
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Physicist William Higinbotham made first video game is called pong is like ping pong game
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Optical disc is invented by David Paul Gregg
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E-mail is invented by Ray Tomlinson
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the Liquid Crystal Displa is invented by James Fergason
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the Camcorder is invented by Sony
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the Automatic Teller Machine is invented by John Shepherd-Barron
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