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| Patents for David Sanford | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 27,090 | Feb. 07, 1860 | A.C. Richard | Improved Mode of Constructing Screw-Wrenches | |
 | 193,898 | Aug. 07, 1877 | H. Sherman | Improvement in Combined Dividers and Siding-Hook | |