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| All Patents in class 417/227 | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 119,764 | Oct. 10, 1871 | C. Hodgkins | Improvement in water-rams | |
![]() | 133,368 | Nov. 26, 1872 | C. Hodgkins | Improvement in water-rams | |