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| Patents for Furbish & Hamlen | |||||
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| Number | Date | Patentee | Title | Type | |
| 275,235 | Apr. 03, 1883 | Z.T. Furbish, C.H. Mallett | Screwdriver | ratcheting screwdrivers | |
| 277,561 | May 15, 1883 | I.M. Furbish | Screwdriver | ratcheting screwdrivers | |