File:US Patent X4.png
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:11, 6 November 2007 | 2,596 × 1,903 (96 KB) | John Vandenberg | {{Information |Description=US Patent X4: Cotton Gin Patent |Source=uspto.gov |Date=March 14, 1794, however, it was not validated until 1807. |Author=Eli Whitney |Permission={{PD-US-Patent}} |other_versions= }} |
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