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| Patents for O. C. Sleeper | |||||
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| Number | Date | Patentee | Title | Type | |
| 20,459 | Jun. 01, 1858 | C.H. Weston | Spokeshave | spokeshaves | |
| 20,945 | Jul. 20, 1858 | H. How | Saw-filing machine | saw sharpening machines | |