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| All Patents in class 416/185 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 7,197X | Aug. 10, 1832 | J. Bennett | Tide or Current Mill, Propelled by a Suspended Water Wheel and Head Blocks | ||
 | RE1,791 | Oct. 11, 1864 | J. Leffel | Improvement in water-wheels | |
| RE4,329 | Apr. 11, 1871 | J.T. Case | Water Wheel | ||
| 1,864,834 | Jun. 28, 1932 | M.M. Klosson | Centrifugal Pump Impeller | ||
 | 2,480,807 | Aug. 30, 1949 | C.B. De Vlieg | Method and apparatus for making impeller wheels | |