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| Patents for Charles H. Ellingwood | |||||
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| Number | Date | Patentee | Title | Type | |
| 546,512 | Sep. 17, 1895 | C.H. Ellingwood | Wood-shaping machine | routing machines | |
| 633,185 | Sep. 19, 1899 | C.H. Ellingwood | Machine for cutting and tenoning stock | tenoning machines | |