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| All Patents in class 415/131 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 48,781 | Jul. 18, 1865 | A. Allen, J.A. Allen | Water Wheel | ||
| 94,868 | Sep. 14, 1869 | J. Chase | Turbine Water Wheel | ||
| 694,101 | Feb. 25, 1902 | E.R. Hyde | Rotary Engine | ||
| 1,125,117 | Jan. 19, 1915 | C.V. Kerr | Centrifugal Pump | ||
| 2,378,974 | Jun. 26, 1945 | C.D. Bower | Mounting Means for Pump Impellers and the Like | ||
| 4,386,886 | Jun. 07, 1983 | M.J. Neal | Adjustable vortex pump | ||