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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 4204777 | Matrix printer control system A system of controlling the operation of a matrix printer wherein printing is performed in each direction of travel of a printing element carriage. A printer control large scale integrated device is combined with a programmable character memory device and... | 05/27/1980 |
