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| Patents Granted on 1857-10-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 18,433 | Oct. 20, 1857 | G.K. Brown | Corn Husker | corn huskers | |
| 18,443 | Oct. 20, 1857 | J.T. Foster | Sawing-machine | reciprocating saws | |
| 18,444 | Oct. 20, 1857 | A. Gaar | Screen for grain-separators | corn and grain separators | |
| 18,448 | Oct. 20, 1857 | C.H. Guard | Wheelwright-machine | wheelwright | |
| 18,473 | Oct. 20, 1857 | E.G. Kinsley, M.W. Stevens | Corn Husking Machine | corn huskers | |
| 18,474 | Oct. 20, 1857 | S. Tarver | Reciprocating mill-saw | sawblades | |