...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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| Application No. | Application Title | Issue Date |
| 20050206706 | Vacuum hold down system A hold down apparatus for use in a hardcopy device (20) comprising a first surface adapted to support a sheet of print media (74) thereon and a vaccum guide arranged to support a partial vacuum, the first surface having a plurality of apertures therein in ... | 09/22/2005 |