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| All Patents in class 475/252 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 252,044 | Jan. 10, 1882 | F.F. Landis | Compensating Gear for Road Engines | ||
 | 266,698 | Oct. 31, 1882 | F.F. Landis | Traction Engine | |
| 340,220 | Apr. 20, 1886 | A.L. Lamb | Compensating Gear for Traction Engines | ||
| 374,663 | Dec. 13, 1887 | J.G. Downie | Compensating Gear for Road Engines | ||
| 374,664 | Dec. 13, 1887 | R.M. Downie | Road Engine | ||
 | 726,930 | May 05, 1903 | E. Huber | Compensating Gearing | |
 | 841,774 | Jan. 22, 1907 | A.A. Fuller | Equalizing-gearing | |