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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 |
| 5644302 | Device for remotely changing the set temperature of a thermostat A remote control system for a rotatable thermostat. The protective cover of a state-of-the-art thermostat is removed and a device responsive to remote control signals is substituted therefor. A drive wheel engages the thermostat dial and a control circuit... | 07/01/1997 |
