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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 |
| 4409939 | Fuel injection pump for internal combustion engines A fuel injection system is proposed which has a high-pressure pump, a fuel reservoir determining the injection pressure, and an intermediate piston, during whose first half-stroke meters fuel under low pressure and during a second half-stroke, driven by t... | 10/18/1983 |
| 4062337 | Electro-pneumatic device for regulating the supply of air to an internal combustion engine An electro-pneumatic device for regulating the supply of air to an internal combustion engine having a carburettor is arranged to supply the air to the engine into a manifold downstream of the carburettor and the air supply is controlled to adjust the ric... | 12/13/1977 |
