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| All Patents in class 418/241 | |||||
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| Number | Date | Patentee | Title | Type | |
| 286,102 | Oct. 02, 1883 | A.B. Wood | Rotary Steam Engine | rotary steam engines | |
| 445,038 | Jan. 20, 1891 | S.G. Brosius | Rotary Steam Engine | rotary steam engines | |