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| Patents for Yerkes & Plumb | |||||
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| Number | Date | Patentee | Title | Type | |
| 142,070 | Aug. 19, 1873 | J. Yerkes | Improvement in the Manufacture of Hammers | hammers | |
| 150,385 | Apr. 28, 1874 | J. Yerkes | Improvement in wedges for tool-handles | hammers | |