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| Patents for Frank A. Hadicke | |||||
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| Number | Date | Patentee | Title | Type | |
| 74,239 | Feb. 11, 1868 | N. Millington | Improvement in Machines for Graduating Rules | making rules | |
| 86,407 | Feb. 02, 1869 | N. Jenkins | Improvement in saws | annular saws | |