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| Patents for Robert Hamilton | |||||
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| Number | Date | Patentee | Title | Type | |
| CA-5,835 | Mar. 21, 1876 | R. Hamilton, E. Gleason | Machine for sharpening horse shoe calks | ||
| 289,752 | Dec. 04, 1883 | A.B. Colton | Stub-axle for trucks | binding machines | |