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| Patents for Isaac A. Dunham | |||||
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| Number | Date | Patentee | Title | Type | |
| 105,452 | Jul. 19, 1870 | A.P. Hazard | Improved shoemakers' edge-plane | cobbler | |
| 235,075 | Dec. 07, 1880 | I.A. Dunham | Cutter for sole or welt-trimmers | cobbler | |