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| All Patents in class 74/114 | |||||
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| Number | Date | Patentee | Title | Type | |
| 9,667X | May 17, 1836 | N. Scholfield | Regulating machinery | ||
| 80,403 | Jul. 28, 1868 | J.E. Gillespie | Improvement in governors | steam engine governors | |
| 151,319 | May 26, 1874 | H.D. Snow | Governors for Water-Wheels | water wheel governors | |
| 169,073 | Oct. 19, 1875 | E. Wright | Governors for Water Wheels | water wheel governors | |
| 307,758 | Nov. 11, 1884 | C.E. Gibbs | Water Wheel Governor | water wheel governors | |