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| Patents for James Ritchie | |||||
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| Number | Date | Patentee | Title | Type | |
| 41,368 | Jan. 26, 1864 | T. Derington | Improvement in lathes for turning spokes | wood lathes | |
| 370,962 | Oct. 04, 1887 | J. Martin | Swing-saw | circular crosscut saws | |