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| Patents for Benjamin H. Hadley | |||||
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| Number | Date | Patentee | Title | Type | |
| 261,848 | Aug. 01, 1882 | B.H. Hadley | Emery Grinder | bench or pedestal grinders | |
| 314,574 | Mar. 31, 1885 | B.H. Hadley | Drilling-lathe | wood lathes | |