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| Patents Granted on 1857-08-18 | |||||
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| Number | Date | Patentee | Title | Type | |
| 18,007 | Aug. 18, 1857 | H.H. Baker | Rotary planing-cutter | cutterheads | |
| 18,017 | Aug. 18, 1857 | P. Maltby | Machine for dressing saws | saw sharpening machines | |
| 18,025 | Aug. 18, 1857 | T.F. Taft | Shears for Cutting Metal | metal shearing machines | |