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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 |
| 4974191 | Adaptive natural language computer interface system A method and apparatus for computer translation between a natural language, such as English, and a second language, such as the command language of a computer operating system, a job control language, a robot control language, a numerical control machine ... | 11/27/1990 |
