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| All Patents in class 74/650 | |||||
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| Number | Date | Patentee | Title | Type | |
| 197,485 | Nov. 27, 1877 | C.D. monnot | Road Engine | steam traction engines | |
| 618,190 | Jan. 24, 1899 | G.F. Sturgess | Chain Gear | industrial machine gearing | |
| 1,479,288 | Jan. 01, 1924 | F.V. Donald | Power-transmission mechanism | ||
| 2,146,583 | Feb. 07, 1939 | O. Kylin | Chuck and bar feed | metal lathes | |