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| Patents for Wm. Irwin | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 62,105 | Feb. 12, 1867 | J. Yerkes | Improvement in Making Hammers | |
 | 62,182 | Feb. 19, 1867 | O.O. Chapman | Improvement in Wheel-Wright's Machines | |
 | 66,174 | Jun. 25, 1867 | E.H. Roe | Hand Saw | |