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| All Patents in class 418/184 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 141,710 | Aug. 12, 1873 | S. Gibson | Rotary Steam Engine | |
 | 507,752 | Oct. 31, 1893 | C.H. Peck | Portable drilling-machine | |
| 634,511 | Oct. 10, 1899 | A. Taylor | Rotary Engine | ||