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| Patents Granted on 1863-10-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 40,344 | Oct. 20, 1863 | J.L. Knowlton | Improved sawing machine | reciprocating saws | |
| 40,356 | Oct. 20, 1863 | S.W. Northrop | Improvement in sawing machines | sawmill carriages | |
| 40,386 | Oct. 20, 1863 | C.C. Walworth | Screw Cutting Tap | taps and dies | |