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| All Patents in class 73/512 | |||||
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| Number | Date | Patentee | Title | Type | |
| 23,790 | Apr. 26, 1859 | T. Silver | Governor for regulating the speed of steam-engines | steam engine governors | |
| RE2,039 | Jul. 25, 1865 | T. Silver | Improvement in steam-engine governors | steam engine governors | |
| 527,720 | Oct. 16, 1894 | F.M. Rites | Govenor | steam engine governors | |
| 737,275 | Aug. 25, 1903 | F.M. Rites | Governor | steam engine governors | |