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| All Patents in class 415/57.4 | |||||
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| Number | Date | Patentee | Title | Type | |
| 516,729 | Mar. 20, 1894 | W.M. Byrd | Rotary Steam Engine | rotary engines | |
| 864,294 | Aug. 27, 1907 | O. Ebert | Rotary Engine | rotary steam engines | |
| 992,433 | May 16, 1911 | W.J. London | Elastic-Fluid Turbine | steam turbines | |
| 1,003,203 | Sep. 12, 1911 | C.B. Rearick | Elastic-Fluid Turbine | steam turbines | |
| 1,021,541 | Mar. 26, 1912 | W.J. London | Steam Turbine | steam turbines | |
| 1,069,177 | Aug. 05, 1913 | C.B. Rearick | Elastic-Fluid Turbine | steam turbines | |