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| Patents Granted on 1811-08-20 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,564X | Aug. 20, 1811 | J. Sanford | Varying the motion of plough | plows | |
| 1,565X | Aug. 20, 1811 | P.W. Miller, N. Miller | Weaving | weaver | |