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| Patents for Legrand D. Wynkoop | |||||
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| Number | Date | Patentee | Title | Type | |
| 52,353 | Jan. 30, 1866 | L.D. Wynkoop | Water Wheel | water wheels | |
| 69,294 | Sep. 24, 1867 | L.D. Wynkoop | Water Wheel | water wheels | |
| 201,584 | Mar. 19, 1878 | L.D. Wynkoop | Turbine Water Wheel | turbine water wheels | |