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| Patents for Charles Ketcham | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 8,581 | Dec. 09, 1851 | C. Ketcham | Improvement in feeding logs in sawmills | |
 | 13,475 | Aug. 21, 1855 | C. Ketcham | Machine for sawing shingles | |