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| Patents for Leonard M. Davis | |||||
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| Number | Date | Patentee | Title | Type | |
| 621,401 | Mar. 21, 1899 | L.M. Davis | Spiral-tool driver | spiral screwdrivers | |
| 642,965 | Feb. 06, 1900 | L.M. Davis | Drilling-Machine | breast drills | |