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| Patents Granted on 1857-01-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| AI158 | Jan. 20, 1857 | R.J. Morrison | Harvester | ||
| 16,428 | Jan. 20, 1857 | E.G. Allen | Steam-pressure gage | steam pressure gauges | |
| 16,435 | Jan. 20, 1857 | G. Gregg | Sawing machine | reciprocating sawmills | |
| 16,436 | Jan. 20, 1857 | E. Howe, Jr. | Sewing Machine | sewing machines | |
| 16,453 | Jan. 20, 1857 | J.D. Sarven | Machine for bending timber | wood bending machines | |
| 16,454 | Jan. 20, 1857 | S.R. Smith | Improved method of feeding lumber laterally in sawing-machines | sawmill headblocks | |