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| All Patents in class 418/162 | |||||
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| Number | Date | Patentee | Title | Type | |
| 6,829X | Nov. 08, 1831 | O. Allen | Rotary or pump steam engine | rotary steam engines | |
| 25,220 | Aug. 23, 1859 | A.P. Samuel | Rotary Steam Engine | rotary steam engines | |
| 465,519 | Dec. 22, 1891 | S.G. Brosius | Rotary Engine | rotary engines | |