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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 |
| 5638460 | Method of evaluating object based upon image processing and inspection apparatus using said method Disclosed is an evaluation method and apparatus used as when inspecting the mounted state of an IC. The evaluation method and apparatus are adapted to acquire the image of an object under inspection, subject the image to two types of image processing base... | 06/10/1997 |
