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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 |
| 6415719 | Shot cartridge with double pattern A shotgun cartridge includes a cartridge case having a primer, a propelling charge contained in the cartridge case disposed proximate to the primer and shot. A first wad shot grouping element has a travel direction side surface in contact with the shot an... | 07/09/2002 |
