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| Patents for Levi C. Strong | |||||
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| Number | Date | Patentee | Title | Type | |
| 198,472 | Dec. 25, 1877 | O.S. Garretson, L.C. Strong | Improvement in mitering-machines | miter boxes | |
| 275,538 | Apr. 10, 1883 | L.C. Strong | Bench-Plane | ||
| 275,539 | Apr. 10, 1883 | L.C. Strong | Bench-Plane | ||
| 297,093 | Apr. 15, 1884 | L.C. Strong | L.C. Strong Leveling Instrument | inclinometers | |