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| Patents for Charles B. Osborn | |||||
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| Number | Date | Patentee | Title | Type | |
| 299,635 | Jun. 03, 1884 | G.S. Forrest | Carpenter's Gage | marking gauges | |
| 299,843 | Jun. 03, 1884 | C.B. Osborn | Batten for Dado Planes | plane accessories | |