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| All Patents in class 60/696 | |||||
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| Number | Date | Patentee | Title | Type | |
| 33,220 | Sep. 03, 1861 | H. Van DeWater | Improved water-wheel | turbine water wheels | |
| 1,791,585 | Feb. 10, 1931 | C.A. Terry | Hydraulic Turbine | turbine water wheels | |