Eli Whitney Cotton Gin Invention - 搜索图片

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scihi.org
Eli Whitney – The Invention of the Cotton Gin and the Antebellum South | SciHi B…
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pinterest.com
October 28, 1793: Eli Whitney applies for a patent for the cotton gin. History Onli…
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constitutingamerica.org
March 14, 1794: Eli Whitney Receives a Patent for His Inventi…
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mtviewmirror.com
Mountain View Mirror : Eli Whitney Inventor of the cotton “gin”

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ThoughtCo
Biography of Eli Whitney, Inventor of the Cotton Gin
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kids.britannica.com
Eli Whitney - Kids | Britannica Kids | Homework Help
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an old fashioned sewing machine with the words, ell whitney's cotton gin
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inventors.about.com
How Eli Whitney Invented the Co…

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ThoughtCo
Biography of Eli Whitney, Inventor of the Cotton Gin
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Pinterest
Eli Whitney invented the cotton gin in 1793. The ma…

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