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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 |
| 6942161 | Painting machine for use with powder paint A painting machine includes a powder paint spray gun, a mixer for mixing a plurality of powder paints having different colors, and a control device controlling an amount of each powder paint supplied to the powder paint spray gun so that a mixing ratio of the powder... | 09/13/2005 |
| 6913027 | Resist stripping method and apparatus A method and an apparatus capable of stripping resist efficiently in a short amount of time. A stripping solution under high pressure is jetted from a nozzle to a rotating wafer. The resist layer on the wafer is applied with the jetted stripping solution, and the re... | 07/05/2005 |
| 6553792 | Resist stripping method and apparatus A method and an apparatus capable of stripping resist efficiently in a short amount of time. A stripping solution under high pressure is jetted from a nozzle to a rotating wafer. The resist layer on the wafer is applied with the jetted stripping solution,... | 04/29/2003 |
