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| Patents for James McCrum | |||||
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| Number | Date | Patentee | Title | Type | |
| 48,703 | Jul. 11, 1865 | J. McCrum | Improvements in Carpenters' Gages | center marking gauges | |
| 57,536 | Aug. 28, 1866 | J. McCrum | Drilling attachment for turning-lathes | drilling and boring | |