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| All Patents in class 415/194 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 900,853 | Oct. 13, 1908 | E.P. Holly | Liquid Impelling Device | |
| 925,065 | Jun. 15, 1909 | A. Wilstam | Impulse Reaction Turbine | ||
| 1,268,738 | Jun. 04, 1918 | W.J. London | Elastic Fluid Turbine | ||