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| Patents Granted on 1851-09-30 | |||||
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| Number | Date | Patentee | Title | Type | |
| 8,393 | Sep. 30, 1851 | G.F. Woolston | Saw for sawing and smoothing boards | sawblades | |
| 8,400 | Sep. 30, 1851 | E. Whiten | Machine for sawing volutes | scrollsaws | |
| 8,401 | Sep. 30, 1851 | M. Spear | Miter-box | miter boxes | |