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