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| All Patents in class 474/148 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | FX-6,346 | Jan. 21, 1831 | J.W. Dart, W. Webster | Propelling mills | |
| 61,938 | Feb. 12, 1867 | A. Hitchcock | Machine Gearing | ||
 | 252,028 | Jan. 10, 1882 | A.S. Gear | Flexible gearing | |