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| Patents for L. P. Smith | |||||
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| Number | Date | Patentee | Title | Type | |
| 30,975 | Dec. 18, 1860 | F.W. Kroeber | Lever-Action Wrench | nut wrenches | |
| 314,511 | Mar. 24, 1885 | E.A. Bostrom | Leveling Instrument | surveying apparatus | |
| 322,240 | Jul. 14, 1885 | C.R. Watrous, E.B. Benham | Nut Cracker | nutcrackers | |