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| All Patents in class 415/199.5 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 566,967 | Sep. 01, 1896 | C.G. Curtis | Elastic Fluid Turbine | ||
| 591,822 | Oct. 19, 1897 | C.G. Curtis | Elastic Fluid Turbine | ||
| 799,062 | Sep. 12, 1905 | C.V. Kerr | Compound Steam Turbine | ||
| 1,268,738 | Jun. 04, 1918 | W.J. London | Elastic Fluid Turbine | ||