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| All Patents in class 415/55.1 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 521,713 | Jun. 19, 1894 | G.M. Hopkins | Turbine | ||
| 1,036,866 | Aug. 27, 1912 | W.J. London | Turbine | ||
| 2,042,499 | Jun. 02, 1936 | F.E. Brady | Rotary pump | ||
| 2,604,852 | Jul. 29, 1952 | M.H. Baker | Pump Impeller | ||
| 4,386,886 | Jun. 07, 1983 | M.J. Neal | Adjustable vortex pump | ||