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| Patents for Charles P. Mingst | |||||
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| Number | Date | Patentee | Title | Type | |
| 662,492 | Nov. 27, 1900 | C.P. Mingst | Cutting Tool | lathe tools | |
| 665,538 | Jan. 08, 1901 | C.P. Mingst | Cutting Tool | lathe tools | |