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| All Patents in class 73/489 | |||||
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| Number | Date | Patentee | Title | Type | |
| 588,655 | Aug. 24, 1897 | J.F. Raders | Non-Centrifugal Governor and Speed Indicator | steam engine governors | |
| 749,743 | Jan. 19, 1904 | T.H. McQuown | Speed-indicator | ignition systems | |
| 1,043,825 | Nov. 12, 1912 | W.A. Griswold | Speed and Distance Indicating and Recording Device | speed and distance indicators | |