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| Patents for N. E. Dwinnell | |||||
| Picture | Number | Date | Patentee | Title | |
![]() | 267,290 | Nov. 07, 1882 | O.D. Warfield | Calipers | |
![]() | 275,860 | Apr. 17, 1883 | E.E. Rose | Bit-brace fastening | |
![]() | 287,589 | Oct. 30, 1883 | J. Stevens | Cutting Nippers | |