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| Patents for Alfonso D. Gates | |||||
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| Number | Date | Patentee | Title | Type | |
| 357,986 | Feb. 15, 1887 | A.D. Gates | Improvements in Monkey-Wrenches | screw adjust wrenches | |
| 397,794 | Feb. 12, 1889 | A.D. Gates | Manufacture of Wrenches | nut wrenches | |