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| Patents for Edward S. Day | |||||
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| Number | Date | Patentee | Title | Type | |
| 470,778 | Mar. 15, 1892 | L.H. Boyden | Attachment for Screwdrivers | screwdriver mechanisms | |
| 686,891 | Nov. 19, 1901 | W.A. Dunbar | Center Square | center marking gauges | |