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| Patents for Frank S. Cook | |||||
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| Number | Date | Patentee | Title | Type | |
| 438,605 | Oct. 21, 1890 | F.S. Cook | Nut Tapping Machine | nut or bolt making machines | |
| 447,665 | Mar. 03, 1891 | F.S. Cook | Wrench | pipe and nut combination wrenches | |
| 452,518 | May 19, 1891 | F.S. Cook | Wrench | pipe wrenches | |
| 464,751 | Dec. 08, 1891 | F.S. Cook | Wrench | quick adjust wrenches | |
| 466,157 | Dec. 29, 1891 | F.S. Cook | Spanner Wrench | wrench jaw components | |