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| Patents for W. R. Mitchell | |||||
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| Number | Date | Patentee | Title | Type | |
| 709,786 | Sep. 23, 1902 | W.D. Lloyd | Power Driven Saw | ||
| 1,021,848 | Apr. 02, 1912 | B. Rindfleisch | Floating tool-holder | milling machine tools | |