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| Patents for John C. Smith | |||||
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| Number | Date | Patentee | Title | Type | |
| 13,351 | Jul. 31, 1855 | F. Field | Crosscut-sawing machine | circular sawmills | |
| 125,440 | Apr. 09, 1872 | L.R. Clark, J.C. Smith | Improvement in machinery for jointing staves | barrel making machines | |
| 327,334 | Sep. 29, 1885 | J.C. Smith | Screw-cutting lathe | screwcutting lathes | |
| 1,991,337 | Feb. 12, 1935 | J.C. Smith | Dust separating apparatus | ||