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Patents for D. A. Hawkins | |||||
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Picture | Number | Date | Patentee | Title | |
![]() | 20,379 | May 25, 1858 | G.C. Taft | Reverse double screw nut wrench | |
![]() | 23,725 | Apr. 19, 1859 | G.C. Taft | Improved Double Acting Screw-Wrench |