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| All Patents in class 74/150 | |||||
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| Number | Date | Patentee | Title | Type | |
| 151,319 | May 26, 1874 | H.D. Snow | Governors for Water-Wheels | water wheel governors | |
| 225,050 | Mar. 02, 1880 | C.G. Cooper | Traction Engine | steam traction engines | |
| 307,758 | Nov. 11, 1884 | C.E. Gibbs | Water Wheel Governor | water wheel governors | |
| 737,996 | Sep. 01, 1903 | D.B. Bullard | Lathe | engine lathes | |