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| All Patents in class 60/398 | |||||
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| Number | Date | Patentee | Title | Type | |
| 5,718 | Aug. 22, 1848 | H. Allen | Governor | ||
| 161,146 | Mar. 23, 1875 | C. Monson | Water-Power | water wheels | |
| 575,576 | Jan. 19, 1897 | J.C. Slaughter | Steam Engine | rotary steam engines | |