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Patents for Nelson B. Keyes | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 438,848 | Oct. 21, 1890 | N.B. Keyes | Sheet-Metal Pliers | |
![]() | 672,654 | Apr. 23, 1901 | W.F. Hobbs, E.N. Sperry, N.B. Keyes | Pliers |