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| Patents for J. R. Mansfield | |||||
| Number | Date | Patentee | Title | Type | |
| 455,183 | Jun. 30, 1891 | J. Dushane | Wrench | screw adjust wrenches | |
| 488,180 | Dec. 20, 1892 | W.M. Buchnau | Thill Support | axle nut wrenches | |