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| All Patents in class 278/74 | |||||
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| Number | Date | Patentee | Title | Type | |
| 612,942 | Oct. 25, 1898 | C.C. Bradley | Thill-coupling | wagon and cart couplings | |
| 684,898 | Oct. 22, 1901 | F.J. Zecher | Thill-coupling | wagons and carts | |