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| All Patents in class 280/137.504 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 9,052 | Jun. 22, 1852 | J.S. French | Inclined Plane | ||
| AI144 | May 27, 1856 | A.J. Gibson | Carriage coupling | ||
 | 93,404 | Aug. 10, 1869 | A. Booth | Improvement in couplings for carriages | |
| 615,874 | Dec. 13, 1898 | H.A. Moyer | Vehicle running-gear | ||
| 628,720 | Jul. 11, 1899 | H.A. Moyer | Spring-vehicle | ||