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| All Patents in class 74/466 | |||||
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| Number | Date | Patentee | Title | Type | |
| 218,994 | Aug. 26, 1879 | J.M. McCoy | Improvement in gear-wheels | industrial machine gearing | |
| 280,428 | Jul. 03, 1883 | W. Wilkinson | Traction Engine | steam traction engines | |
| 490,503 | Jan. 24, 1893 | G.S. Rominger | Worm Gear Cutting Machine | gear making machines | |