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| Patents for Alex F. Roberts | |||||
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| Number | Date | Patentee | Title | Type | |
| 186,259 | Jan. 16, 1877 | I.U. Malphurs | Combination Tool | combination tools | |
| 204,992 | Jun. 18, 1878 | J.H. Coldwell, G.P. Overin | Plane and Guide for Working Rattan | splint planes | |