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| All Patents in class 418/10 | |||||
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| Number | Date | Patentee | Title | Type | |
| 715,221 | Dec. 02, 1902 | E.C. Warren | Rotary Engine | rotary steam engines | |
| 761,799 | Jun. 07, 1904 | E.C. Warren | Rotary Engine | rotary steam engines | |
| 798,848 | Sep. 05, 1905 | E.C. Warren | Rotary Engine | rotary steam engines | |