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| All Patents in class 73/525 | |||||
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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 | |
| 58,491 | Oct. 02, 1866 | T. Silver | Improvement in governors for steam-engines | steam engine governors | |
| 588,655 | Aug. 24, 1897 | J.F. Raders | Non-Centrifugal Governor and Speed Indicator | steam engine governors | |
| 588,656 | Aug. 24, 1897 | J.F. Raders | Non-Centrifugal Governor and Speed Indicator | steam engine governors | |