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| Patents for Charles H. Underwood | |||||
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| Number | Date | Patentee | Title | Type | |
| 88,236 | Mar. 23, 1869 | C.H. Underwood | Improvement in miter-boxes | miter boxes | |
| 626,512 | Jun. 06, 1899 | C.H. Underwood | Corn Cutter, Shocker and Binder | corn stalk cutters | |