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| All Patents in class 415/168.2 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 1,137,948 | May 04, 1915 | E. Buehle | Pressure Turbine | ||
| 1,881,680 | Oct. 11, 1932 | M.M. Klosson | Double Suction Centrifugal Pump | ||
| 2,574,724 | Nov. 13, 1951 | M.H. Baker | Multistage Rotary Pump | ||