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| Patents for Joseph Crum | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,411 | Nov. 16, 1839 | H. Crum | Making wood screws | screw machines | |
| 5,794 | Sep. 19, 1848 | J. Crum | Machine for Making Wood Screws | screw machines | |