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| All Patents in class 73/546 | |||||
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| Number | Date | Patentee | Title | Type | |
| 849,129 | Apr. 02, 1907 | W. Hardwick | Governor | steam engine governors | |
| 862,599 | Aug. 06, 1907 | L.W. Witry | Speed-regulating device for explosive-engines | gas and gasoline engines | |
| 1,003,198 | Sep. 12, 1911 | R.H. Pascall | Engine Governor | internal combustion engine governors | |
| 1,674,950 | Jun. 26, 1928 | I.M. Crafts | Governor | traction engine governors | |
| 2,586,867 | Feb. 26, 1952 | O.L. Schram, F.E. Smith | Governor | electric motors | |