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| Patents for Charles K. Fraser | |||||
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| Number | Date | Patentee | Title | Type | |
| 401,566 | Apr. 16, 1889 | F.M. Leavitt | Drop-hammer | drop hammers | |
| 421,327 | Feb. 11, 1890 | N.C. Stiles | Drop-hammer | drop hammers | |