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| All Patents in class 475/198 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 329,153 | Oct. 27, 1885 | J.H. Elward | Traction Engine | ||
 | 706,191 | Aug. 05, 1902 | W.H. Evans, W. Evans, R.L. Morton, W.S. Morton, S.S. Morton | Traction Engine | |
| 878,072 | Feb. 04, 1908 | J.W. Lambert | Transmission Gear for Automobiles | ||
 | 953,634 | Mar. 29, 1910 | S.J. Morgan | Friction speed-changing mechanism | |
| 1,734,375 | Nov. 05, 1929 | R. Hamilton | Gear and bearing assembly for Fordson tractors | ||