1 сент 1793 г. - Cotton gin invented
Описание:
an invention that made a big step towards machine usage in America, and the slave trade.Eli Whitney (1765–1825) applied for a patent of his cotton gin on October 28, 1793; the patent was granted on March 14, 1794, but was not validated until 1807.
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Дата:
1 сент 1793 г.
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~ 231 г назад