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| Patents for D. L. Humphrey | |||||
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| Number | Date | Patentee | Title | Type | |
| 98,265 | Dec. 28, 1869 | J. Humphrey | Improvement in boring and mortising-machine | mortising machines | |
| 116,932 | Jul. 11, 1871 | A. Crease | Woodworker's Vise | woodworkers vises | |
| 122,320 | Jan. 02, 1872 | J. Huther | Improvement in saws | saw teeth | |