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| All Patents in class 418/149 | |||||
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| Number | Date | Patentee | Title | Type | |
| 251,733 | Jan. 03, 1882 | W.C. Pooley | Rotary engine | rotary steam engines | |
| 459,424 | Sep. 15, 1891 | G.A. Thomson | Rotary Engine | rotary steam engines | |
| 685,775 | Nov. 05, 1901 | T.J. Lindsay | Rotary Pump or Blower | rotary pumps | |
| 711,239 | Oct. 14, 1902 | E.B. Tree | Rotary Engine | ||
| 2,492,687 | Dec. 27, 1949 | A.H. Dall | Hydraulic Pump | hydraulic apparatus | |