...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 |
| 4287408 | Combination electrically heated material receptacle and instrument heater A materials heating device includes rod-shaped electrical heating element which serves both to heat a thermoconductive receptacle containing the material to be heated as well as tools and instruments for working with the material. The heating element is m... | 09/01/1981 |