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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 |
| 6877589 | Drum brake device with an automatic shoe clearance adjustment apparatus A drum brake device prevents shoe clearance over-adjustment by means of a thermo-sensitive member with a lower leg opening force and provides a smaller thermo-sensitive member with a lower cost. A portion between both ends of the brake lever (50) in a directi... | 04/12/2005 |
| 6806685 | Accumulator power supply unit An accumulator power supply unit equalizing the voltage between terminals of the respective accumulator block to be a predetermined value without being affected by different characteristics of the accumulator block such as electric double layer capacitor and seconda... | 10/19/2004 |
| 6766887 | Dual mode type drum brake device A brake cable for a dual mode type drum brake functioning as a leading-trailing type during the service brake and as a duo-servo type during the parking brake, may be easily arranged at a lower side of axle. The first and second brake levers (118), (119 | 07/27/2004 |
