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| Patents for Harford J. Perkins | |||||
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| Number | Date | Patentee | Title | Type | |
| 105,244 | Jul. 12, 1870 | H.J. Perkins | Improvement in machine for sharpening the teeth of saws | saw sharpening machines | |
| 232,754 | Sep. 28, 1880 | W.J. Perkins | Gang-edger | circular ripsaws | |